158.5 is what percent of 393 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 393 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 393, so we can write it down as 100%=393.
4. We know, that x% equals 158.5 of the output value, so we can write it down as x%=158.5.
5. Now we have two simple equations:
1) 100%=393
2) x%=158.5
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=393/158.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 158.5 is what percent of 393

100%/x%=393/158.5
(100/x)*x=(393/158.5)*x       - we multiply both sides of the equation by x
100=2.4794952681388*x       - we divide both sides of the equation by (2.4794952681388) to get x
100/2.4794952681388=x
40.330788804071=x
x=40.330788804071

now we have:
158.5 is 40.330788804071% of 393