128.5 is what percent of 462 - 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 462 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 462, so we can write it down as 100%=462.
4. We know, that x% equals 128.5 of the output value, so we can write it down as x%=128.5.
5. Now we have two simple equations:
1) 100%=462
2) x%=128.5
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%=462/128.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 128.5 is what percent of 462

100%/x%=462/128.5
(100/x)*x=(462/128.5)*x       - we multiply both sides of the equation by x
100=3.5953307392996*x       - we divide both sides of the equation by (3.5953307392996) to get x
100/3.5953307392996=x
27.813852813853=x
x=27.813852813853

now we have:
128.5 is 27.813852813853% of 462