Finding the Fourth Proportional to 100,943.12, 139,306.20 and 58,514.96
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Solution
The fourth proportional to 100,943.12, 139,306.20 and 58,514.96 is: 80,753.37
Step by Step Solution
- Step 1: Write the proportion equation
100,943.12 : 139,306.20 = 58,514.96 : x - Step 2: Convert to fraction form
100,943.12/139,306.20 = 58,514.96/x - Step 3: Cross multiply
100,943.12x = 139,306.20 × 58,514.96 - Step 4: Simplify right side
100,943.12x = 8,151,496,720.75 - Step 5: Solve for x
x = 8,151,496,720.75/100,943.12 - Step 6: Final answer
x = 80,753.37
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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.