74.2 is what percent of 318.9 - 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 318.9 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 318.9, so we can write it down as 100%=318.9.
4. We know, that x% equals 74.2 of the output value, so we can write it down as x%=74.2.
5. Now we have two simple equations:
1) 100%=318.9
2) x%=74.2
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%=318.9/74.2
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 74.2 is what percent of 318.9

100%/x%=318.9/74.2
(100/x)*x=(318.9/74.2)*x       - we multiply both sides of the equation by x
100=4.2978436657682*x       - we divide both sides of the equation by (4.2978436657682) to get x
100/4.2978436657682=x
23.267481969269=x
x=23.267481969269

now we have:
74.2 is 23.267481969269% of 318.9