Finding the Fourth Proportional to 115,120,129.72, 172,769,740.08 and 80,350,652.92
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Solution
The fourth proportional to 115,120,129.72, 172,769,740.08 and 80,350,652.92 is: 120,588,479.65
Step by Step Solution
- Step 1: Write the proportion equation
115,120,129.72 : 172,769,740.08 = 80,350,652.92 : x - Step 2: Convert to fraction form
115,120,129.72/172,769,740.08 = 80,350,652.92/x - Step 3: Cross multiply
115,120,129.72x = 172,769,740.08 × 80,350,652.92 - Step 4: Simplify right side
115,120,129.72x = 13,882,161,420,246,694 - Step 5: Solve for x
x = 13,882,161,420,246,694/115,120,129.72 - Step 6: Final answer
x = 120,588,479.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.