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Finding the Fourth Proportional to 83,166.66, 125,311.10 and 68,699.52

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Solution

The fourth proportional to 83,166.66, 125,311.10 and 68,699.52 is: 103,512.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,166.66 : 125,311.10 = 68,699.52 : x
  2. Step 2: Convert to fraction form
    83,166.66/125,311.10 = 68,699.52/x
  3. Step 3: Cross multiply
    83,166.66x = 125,311.10 × 68,699.52
  4. Step 4: Simplify right side
    83,166.66x = 8,608,812,077.17
  5. Step 5: Solve for x
    x = 8,608,812,077.17/83,166.66
  6. Step 6: Final answer
    x = 103,512.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.