Finding the Fourth Proportional to 134,545.91, 185,672.45 and 74,115.18
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Solution
The fourth proportional to 134,545.91, 185,672.45 and 74,115.18 is: 102,278.45
Step by Step Solution
- Step 1: Write the proportion equation
134,545.91 : 185,672.45 = 74,115.18 : x - Step 2: Convert to fraction form
134,545.91/185,672.45 = 74,115.18/x - Step 3: Cross multiply
134,545.91x = 185,672.45 × 74,115.18 - Step 4: Simplify right side
134,545.91x = 13,761,147,238.08 - Step 5: Solve for x
x = 13,761,147,238.08/134,545.91 - Step 6: Final answer
x = 102,278.45
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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.