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Finding the Fourth Proportional to 123,059.36, 169,822.02 and 66,470.78

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Solution

The fourth proportional to 123,059.36, 169,822.02 and 66,470.78 is: 91,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,059.36 : 169,822.02 = 66,470.78 : x
  2. Step 2: Convert to fraction form
    123,059.36/169,822.02 = 66,470.78/x
  3. Step 3: Cross multiply
    123,059.36x = 169,822.02 × 66,470.78
  4. Step 4: Simplify right side
    123,059.36x = 11,288,202,130.58
  5. Step 5: Solve for x
    x = 11,288,202,130.58/123,059.36
  6. Step 6: Final answer
    x = 91,729.73

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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.