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Finding the Fourth Proportional to 123,072.64, 169,845.24 and 69,359.92

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Solution

The fourth proportional to 123,072.64, 169,845.24 and 69,359.92 is: 95,719.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,072.64 : 169,845.24 = 69,359.92 : x
  2. Step 2: Convert to fraction form
    123,072.64/169,845.24 = 69,359.92/x
  3. Step 3: Cross multiply
    123,072.64x = 169,845.24 × 69,359.92
  4. Step 4: Simplify right side
    123,072.64x = 11,780,452,258.78
  5. Step 5: Solve for x
    x = 11,780,452,258.78/123,072.64
  6. Step 6: Final answer
    x = 95,719.51

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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.