Step 1:
The first step to converting 187121.20019945 to a fraction is to re-write 187121.20019945 in the form p/q where p and q are both positive integers. To start with, 187121.20019945 can be written as simply 187121.20019945/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 187121.20019945, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 187121.20019945/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 187121.20019945/1 each by 100000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 187121.20019945 as a fraction:
748485/4 / 1