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Finding the Fourth Proportional to 123,044.31, 169,801.65 and 69,330.15

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Solution

The fourth proportional to 123,044.31, 169,801.65 and 69,330.15 is: 95,675.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,044.31 : 169,801.65 = 69,330.15 : x
  2. Step 2: Convert to fraction form
    123,044.31/169,801.65 = 69,330.15/x
  3. Step 3: Cross multiply
    123,044.31x = 169,801.65 × 69,330.15
  4. Step 4: Simplify right side
    123,044.31x = 11,772,373,864.75
  5. Step 5: Solve for x
    x = 11,772,373,864.75/123,044.31
  6. Step 6: Final answer
    x = 95,675.89

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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.