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Finding the Fourth Proportional to 123,098.43, 169,883.82 and 68,656.71

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Solution

The fourth proportional to 123,098.43, 169,883.82 and 68,656.71 is: 94,750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,098.43 : 169,883.82 = 68,656.71 : x
  2. Step 2: Convert to fraction form
    123,098.43/169,883.82 = 68,656.71/x
  3. Step 3: Cross multiply
    123,098.43x = 169,883.82 × 68,656.71
  4. Step 4: Simplify right side
    123,098.43x = 11,663,664,163.43
  5. Step 5: Solve for x
    x = 11,663,664,163.43/123,098.43
  6. Step 6: Final answer
    x = 94,750.71

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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.