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Finding the Fourth Proportional to 138,383.87, 207,414.50 and 63,511.92

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Solution

The fourth proportional to 138,383.87, 207,414.50 and 63,511.92 is: 95,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,383.87 : 207,414.50 = 63,511.92 : x
  2. Step 2: Convert to fraction form
    138,383.87/207,414.50 = 63,511.92/x
  3. Step 3: Cross multiply
    138,383.87x = 207,414.50 × 63,511.92
  4. Step 4: Simplify right side
    138,383.87x = 13,173,292,813.28
  5. Step 5: Solve for x
    x = 13,173,292,813.28/138,383.87
  6. Step 6: Final answer
    x = 95,193.85

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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.