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Finding the Fourth Proportional to 123,057.24, 169,819.08 and 66,468.60

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Solution

The fourth proportional to 123,057.24, 169,819.08 and 66,468.60 is: 91,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,057.24 : 169,819.08 = 66,468.60 : x
  2. Step 2: Convert to fraction form
    123,057.24/169,819.08 = 66,468.60/x
  3. Step 3: Cross multiply
    123,057.24x = 169,819.08 × 66,468.60
  4. Step 4: Simplify right side
    123,057.24x = 11,287,636,500.89
  5. Step 5: Solve for x
    x = 11,287,636,500.89/123,057.24
  6. Step 6: Final answer
    x = 91,726.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.