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Finding the Fourth Proportional to 123,304.97, 170,142.61 and 74,881.71

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Solution

The fourth proportional to 123,304.97, 170,142.61 and 74,881.71 is: 103,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,304.97 : 170,142.61 = 74,881.71 : x
  2. Step 2: Convert to fraction form
    123,304.97/170,142.61 = 74,881.71/x
  3. Step 3: Cross multiply
    123,304.97x = 170,142.61 × 74,881.71
  4. Step 4: Simplify right side
    123,304.97x = 12,740,569,580.66
  5. Step 5: Solve for x
    x = 12,740,569,580.66/123,304.97
  6. Step 6: Final answer
    x = 103,325.68

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1.5x scale

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.