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Finding the Fourth Proportional to 124,997.60, 172,497 and 68,408.97

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Solution

The fourth proportional to 124,997.60, 172,497 and 68,408.97 is: 94,404.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,997.60 : 172,497 = 68,408.97 : x
  2. Step 2: Convert to fraction form
    124,997.60/172,497 = 68,408.97/x
  3. Step 3: Cross multiply
    124,997.60x = 172,497 × 68,408.97
  4. Step 4: Simplify right side
    124,997.60x = 11,800,342,098.09
  5. Step 5: Solve for x
    x = 11,800,342,098.09/124,997.60
  6. Step 6: Final answer
    x = 94,404.55

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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.