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Finding the Fourth Proportional to 138,610.76, 207,743.88 and 63,651.38

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Solution

The fourth proportional to 138,610.76, 207,743.88 and 63,651.38 is: 95,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,610.76 : 207,743.88 = 63,651.38 : x
  2. Step 2: Convert to fraction form
    138,610.76/207,743.88 = 63,651.38/x
  3. Step 3: Cross multiply
    138,610.76x = 207,743.88 × 63,651.38
  4. Step 4: Simplify right side
    138,610.76x = 13,223,184,648.55
  5. Step 5: Solve for x
    x = 13,223,184,648.55/138,610.76
  6. Step 6: Final answer
    x = 95,397.97

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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.