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Finding the Fourth Proportional to 123,874.17, 170,945.42 and 67,285.95

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Solution

The fourth proportional to 123,874.17, 170,945.42 and 67,285.95 is: 92,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,874.17 : 170,945.42 = 67,285.95 : x
  2. Step 2: Convert to fraction form
    123,874.17/170,945.42 = 67,285.95/x
  3. Step 3: Cross multiply
    123,874.17x = 170,945.42 × 67,285.95
  4. Step 4: Simplify right side
    123,874.17x = 11,502,224,646.42
  5. Step 5: Solve for x
    x = 11,502,224,646.42/123,874.17
  6. Step 6: Final answer
    x = 92,854.10

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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.