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Finding the Fourth Proportional to 122,843.46, 169,523.43 and 69,129.38

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Solution

The fourth proportional to 122,843.46, 169,523.43 and 69,129.38 is: 95,398.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,843.46 : 169,523.43 = 69,129.38 : x
  2. Step 2: Convert to fraction form
    122,843.46/169,523.43 = 69,129.38/x
  3. Step 3: Cross multiply
    122,843.46x = 169,523.43 × 69,129.38
  4. Step 4: Simplify right side
    122,843.46x = 11,719,049,775.95
  5. Step 5: Solve for x
    x = 11,719,049,775.95/122,843.46
  6. Step 6: Final answer
    x = 95,398.24

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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.