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Finding the Fourth Proportional to 138,484.98, 207,644.34 and 63,511.20

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Solution

The fourth proportional to 138,484.98, 207,644.34 and 63,511.20 is: 95,228.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,484.98 : 207,644.34 = 63,511.20 : x
  2. Step 2: Convert to fraction form
    138,484.98/207,644.34 = 63,511.20/x
  3. Step 3: Cross multiply
    138,484.98x = 207,644.34 × 63,511.20
  4. Step 4: Simplify right side
    138,484.98x = 13,187,741,206.61
  5. Step 5: Solve for x
    x = 13,187,741,206.61/138,484.98
  6. Step 6: Final answer
    x = 95,228.68

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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.