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Finding the Fourth Proportional to 123,930.74, 171,024.10 and 67,342.12

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Solution

The fourth proportional to 123,930.74, 171,024.10 and 67,342.12 is: 92,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,930.74 : 171,024.10 = 67,342.12 : x
  2. Step 2: Convert to fraction form
    123,930.74/171,024.10 = 67,342.12/x
  3. Step 3: Cross multiply
    123,930.74x = 171,024.10 × 67,342.12
  4. Step 4: Simplify right side
    123,930.74x = 11,517,125,465.09
  5. Step 5: Solve for x
    x = 11,517,125,465.09/123,930.74
  6. Step 6: Final answer
    x = 92,931.95

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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.