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Finding the Fourth Proportional to 124,938, 172,414.80 and 68,348.88

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Solution

The fourth proportional to 124,938, 172,414.80 and 68,348.88 is: 94,321.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,938 : 172,414.80 = 68,348.88 : x
  2. Step 2: Convert to fraction form
    124,938/172,414.80 = 68,348.88/x
  3. Step 3: Cross multiply
    124,938x = 172,414.80 × 68,348.88
  4. Step 4: Simplify right side
    124,938x = 11,784,358,475.42
  5. Step 5: Solve for x
    x = 11,784,358,475.42/124,938
  6. Step 6: Final answer
    x = 94,321.65

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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.