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Finding the Fourth Proportional to 123,170.47, 169,976.81 and 74,758.39

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Solution

The fourth proportional to 123,170.47, 169,976.81 and 74,758.39 is: 103,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,170.47 : 169,976.81 = 74,758.39 : x
  2. Step 2: Convert to fraction form
    123,170.47/169,976.81 = 74,758.39/x
  3. Step 3: Cross multiply
    123,170.47x = 169,976.81 × 74,758.39
  4. Step 4: Simplify right side
    123,170.47x = 12,707,192,652.94
  5. Step 5: Solve for x
    x = 12,707,192,652.94/123,170.47
  6. Step 6: Final answer
    x = 103,167.53

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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.