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Finding the Fourth Proportional to 123,057.92, 169,820.04 and 66,469.30

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Solution

The fourth proportional to 123,057.92, 169,820.04 and 66,469.30 is: 91,727.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,057.92 : 169,820.04 = 66,469.30 : x
  2. Step 2: Convert to fraction form
    123,057.92/169,820.04 = 66,469.30/x
  3. Step 3: Cross multiply
    123,057.92x = 169,820.04 × 66,469.30
  4. Step 4: Simplify right side
    123,057.92x = 11,287,819,184.77
  5. Step 5: Solve for x
    x = 11,287,819,184.77/123,057.92
  6. Step 6: Final answer
    x = 91,727.69

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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.