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Finding the Fourth Proportional to 138,380.87, 207,410.00 and 63,508.92

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Solution

The fourth proportional to 138,380.87, 207,410.00 and 63,508.92 is: 95,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,380.87 : 207,410.00 = 63,508.92 : x
  2. Step 2: Convert to fraction form
    138,380.87/207,410.00 = 63,508.92/x
  3. Step 3: Cross multiply
    138,380.87x = 207,410.00 × 63,508.92
  4. Step 4: Simplify right side
    138,380.87x = 13,172,384,779.66
  5. Step 5: Solve for x
    x = 13,172,384,779.66/138,380.87
  6. Step 6: Final answer
    x = 95,189.35

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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.