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Finding the Fourth Proportional to 138,383.88, 207,414.48 and 63,511.92

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Solution

The fourth proportional to 138,383.88, 207,414.48 and 63,511.92 is: 95,193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,383.88 : 207,414.48 = 63,511.92 : x
  2. Step 2: Convert to fraction form
    138,383.88/207,414.48 = 63,511.92/x
  3. Step 3: Cross multiply
    138,383.88x = 207,414.48 × 63,511.92
  4. Step 4: Simplify right side
    138,383.88x = 13,173,291,860.60
  5. Step 5: Solve for x
    x = 13,173,291,860.60/138,383.88
  6. Step 6: Final answer
    x = 95,193.83

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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.