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Finding the Fourth Proportional to 123,140.76, 169,934.00 and 66,552

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Solution

The fourth proportional to 123,140.76, 169,934.00 and 66,552 is: 91,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,140.76 : 169,934.00 = 66,552 : x
  2. Step 2: Convert to fraction form
    123,140.76/169,934.00 = 66,552/x
  3. Step 3: Cross multiply
    123,140.76x = 169,934.00 × 66,552
  4. Step 4: Simplify right side
    123,140.76x = 11,309,447,235.24
  5. Step 5: Solve for x
    x = 11,309,447,235.24/123,140.76
  6. Step 6: Final answer
    x = 91,841.62

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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.