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Finding the Fourth Proportional to 124,737.68, 172,137.48 and 68,150

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Solution

The fourth proportional to 124,737.68, 172,137.48 and 68,150 is: 94,046.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,737.68 : 172,137.48 = 68,150 : x
  2. Step 2: Convert to fraction form
    124,737.68/172,137.48 = 68,150/x
  3. Step 3: Cross multiply
    124,737.68x = 172,137.48 × 68,150
  4. Step 4: Simplify right side
    124,737.68x = 11,731,169,262
  5. Step 5: Solve for x
    x = 11,731,169,262/124,737.68
  6. Step 6: Final answer
    x = 94,046.72

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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.