Home / 138,590.80-207,861.09-38,726.25

Finding the Fourth Proportional to 138,590.80, 207,861.09 and 38,726.25

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Solution

The fourth proportional to 138,590.80, 207,861.09 and 38,726.25 is: 58,082.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,590.80 : 207,861.09 = 38,726.25 : x
  2. Step 2: Convert to fraction form
    138,590.80/207,861.09 = 38,726.25/x
  3. Step 3: Cross multiply
    138,590.80x = 207,861.09 × 38,726.25
  4. Step 4: Simplify right side
    138,590.80x = 8,049,680,781.13
  5. Step 5: Solve for x
    x = 8,049,680,781.13/138,590.80
  6. Step 6: Final answer
    x = 58,082.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.