Finding the Fourth Proportional to 156,161,475.99, 215,502,856.90 and 86,551,350.93
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Solution
The fourth proportional to 156,161,475.99, 215,502,856.90 and 86,551,350.93 is: 119,440,875.39
Step by Step Solution
- Step 1: Write the proportion equation
156,161,475.99 : 215,502,856.90 = 86,551,350.93 : x - Step 2: Convert to fraction form
156,161,475.99/215,502,856.90 = 86,551,350.93/x - Step 3: Cross multiply
156,161,475.99x = 215,502,856.90 × 86,551,350.93 - Step 4: Simplify right side
156,161,475.99x = 18,652,063,393,753,096 - Step 5: Solve for x
x = 18,652,063,393,753,096/156,161,475.99 - Step 6: Final answer
x = 119,440,875.39
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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.