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Finding the Third Proportional to 81.44 and 125.94

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Solution

The third proportional to 81.44 and 125.94 is: 194.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81.44 : 125.94 = 125.94 : x
  2. Step 2: Convert to fraction form
    81.44/125.94 = 125.94/x
  3. Step 3: Cross multiply
    81.44x = 125.94 × 125.94
  4. Step 4: Simplify right side
    81.44x = 15,860.25
  5. Step 5: Solve for x
    x = 15,860.25/81.44
  6. Step 6: Final answer
    x = 194.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.