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Finding the Fourth Proportional to 138,610.79, 207,884.81 and 63,658.88

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Solution

The fourth proportional to 138,610.79, 207,884.81 and 63,658.88 is: 95,473.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,610.79 : 207,884.81 = 63,658.88 : x
  2. Step 2: Convert to fraction form
    138,610.79/207,884.81 = 63,658.88/x
  3. Step 3: Cross multiply
    138,610.79x = 207,884.81 × 63,658.88
  4. Step 4: Simplify right side
    138,610.79x = 13,233,714,072.90
  5. Step 5: Solve for x
    x = 13,233,714,072.90/138,610.79
  6. Step 6: Final answer
    x = 95,473.91

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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.