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Finding the Fourth Proportional to 122,881.52, 169,589.30 and 75,166.65

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Solution

The fourth proportional to 122,881.52, 169,589.30 and 75,166.65 is: 103,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,881.52 : 169,589.30 = 75,166.65 : x
  2. Step 2: Convert to fraction form
    122,881.52/169,589.30 = 75,166.65/x
  3. Step 3: Cross multiply
    122,881.52x = 169,589.30 × 75,166.65
  4. Step 4: Simplify right side
    122,881.52x = 12,747,459,181.01
  5. Step 5: Solve for x
    x = 12,747,459,181.01/122,881.52
  6. Step 6: Final answer
    x = 103,737.80

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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.