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Finding the Fourth Proportional to 122,965.64, 169,693.16 and 69,251.57

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Solution

The fourth proportional to 122,965.64, 169,693.16 and 69,251.57 is: 95,567.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,965.64 : 169,693.16 = 69,251.57 : x
  2. Step 2: Convert to fraction form
    122,965.64/169,693.16 = 69,251.57/x
  3. Step 3: Cross multiply
    122,965.64x = 169,693.16 × 69,251.57
  4. Step 4: Simplify right side
    122,965.64x = 11,751,516,553.54
  5. Step 5: Solve for x
    x = 11,751,516,553.54/122,965.64
  6. Step 6: Final answer
    x = 95,567.49

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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.