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Finding the Fourth Proportional to 131,800.80, 181,882.82 and 71,370.96

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Solution

The fourth proportional to 131,800.80, 181,882.82 and 71,370.96 is: 98,490.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,800.80 : 181,882.82 = 71,370.96 : x
  2. Step 2: Convert to fraction form
    131,800.80/181,882.82 = 71,370.96/x
  3. Step 3: Cross multiply
    131,800.80x = 181,882.82 × 71,370.96
  4. Step 4: Simplify right side
    131,800.80x = 12,981,151,470.91
  5. Step 5: Solve for x
    x = 12,981,151,470.91/131,800.80
  6. Step 6: Final answer
    x = 98,490.69

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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.