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Finding the Fourth Proportional to 122,738.88, 169,378.04 and 69,023.88

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Solution

The fourth proportional to 122,738.88, 169,378.04 and 69,023.88 is: 95,252.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,738.88 : 169,378.04 = 69,023.88 : x
  2. Step 2: Convert to fraction form
    122,738.88/169,378.04 = 69,023.88/x
  3. Step 3: Cross multiply
    122,738.88x = 169,378.04 × 69,023.88
  4. Step 4: Simplify right side
    122,738.88x = 11,691,129,507.60
  5. Step 5: Solve for x
    x = 11,691,129,507.60/122,738.88
  6. Step 6: Final answer
    x = 95,252.05

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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.