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Finding the Fourth Proportional to 83.06, 125.17 and 68.93

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Solution

The fourth proportional to 83.06, 125.17 and 68.93 is: 103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.06 : 125.17 = 68.93 : x
  2. Step 2: Convert to fraction form
    83.06/125.17 = 68.93/x
  3. Step 3: Cross multiply
    83.06x = 125.17 × 68.93
  4. Step 4: Simplify right side
    83.06x = 8,627.97
  5. Step 5: Solve for x
    x = 8,627.97/83.06
  6. Step 6: Final answer
    x = 103.88

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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.