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Finding the Fourth Proportional to 123,198.92, 169,975.70 and 75,402.44

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Solution

The fourth proportional to 123,198.92, 169,975.70 and 75,402.44 is: 104,031.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,198.92 : 169,975.70 = 75,402.44 : x
  2. Step 2: Convert to fraction form
    123,198.92/169,975.70 = 75,402.44/x
  3. Step 3: Cross multiply
    123,198.92x = 169,975.70 × 75,402.44
  4. Step 4: Simplify right side
    123,198.92x = 12,816,582,520.71
  5. Step 5: Solve for x
    x = 12,816,582,520.71/123,198.92
  6. Step 6: Final answer
    x = 104,031.61

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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.