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Finding the Fourth Proportional to 138,423.26, 207,472.90 and 63,550.64

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Solution

The fourth proportional to 138,423.26, 207,472.90 and 63,550.64 is: 95,251.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,423.26 : 207,472.90 = 63,550.64 : x
  2. Step 2: Convert to fraction form
    138,423.26/207,472.90 = 63,550.64/x
  3. Step 3: Cross multiply
    138,423.26x = 207,472.90 × 63,550.64
  4. Step 4: Simplify right side
    138,423.26x = 13,185,035,577.66
  5. Step 5: Solve for x
    x = 13,185,035,577.66/138,423.26
  6. Step 6: Final answer
    x = 95,251.59

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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.