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Finding the Fourth Proportional to 122,965.96, 169,691.22 and 69,251.08

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Solution

The fourth proportional to 122,965.96, 169,691.22 and 69,251.08 is: 95,565.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,965.96 : 169,691.22 = 69,251.08 : x
  2. Step 2: Convert to fraction form
    122,965.96/169,691.22 = 69,251.08/x
  3. Step 3: Cross multiply
    122,965.96x = 169,691.22 × 69,251.08
  4. Step 4: Simplify right side
    122,965.96x = 11,751,300,251.52
  5. Step 5: Solve for x
    x = 11,751,300,251.52/122,965.96
  6. Step 6: Final answer
    x = 95,565.47

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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.