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Finding the Fourth Proportional to 138,502.63, 207,589.92 and 63,559.61

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Solution

The fourth proportional to 138,502.63, 207,589.92 and 63,559.61 is: 95,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,502.63 : 207,589.92 = 63,559.61 : x
  2. Step 2: Convert to fraction form
    138,502.63/207,589.92 = 63,559.61/x
  3. Step 3: Cross multiply
    138,502.63x = 207,589.92 × 63,559.61
  4. Step 4: Simplify right side
    138,502.63x = 13,194,334,355.13
  5. Step 5: Solve for x
    x = 13,194,334,355.13/138,502.63
  6. Step 6: Final answer
    x = 95,264.14

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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.