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Finding the Fourth Proportional to 138,617.76, 207,754.38 and 63,658.38

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Solution

The fourth proportional to 138,617.76, 207,754.38 and 63,658.38 is: 95,408.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,617.76 : 207,754.38 = 63,658.38 : x
  2. Step 2: Convert to fraction form
    138,617.76/207,754.38 = 63,658.38/x
  3. Step 3: Cross multiply
    138,617.76x = 207,754.38 × 63,658.38
  4. Step 4: Simplify right side
    138,617.76x = 13,225,307,268.70
  5. Step 5: Solve for x
    x = 13,225,307,268.70/138,617.76
  6. Step 6: Final answer
    x = 95,408.46

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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.