Finding the Fourth Proportional to 131,578.07, 181,598.18 and 86,387.13
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Solution
The fourth proportional to 131,578.07, 181,598.18 and 86,387.13 is: 119,227.66
Step by Step Solution
- Step 1: Write the proportion equation
131,578.07 : 181,598.18 = 86,387.13 : x - Step 2: Convert to fraction form
131,578.07/181,598.18 = 86,387.13/x - Step 3: Cross multiply
131,578.07x = 181,598.18 × 86,387.13 - Step 4: Simplify right side
131,578.07x = 15,687,745,151.49 - Step 5: Solve for x
x = 15,687,745,151.49/131,578.07 - Step 6: Final answer
x = 119,227.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.