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Finding the Third Proportional to 61.49 and 108.11

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Solution

The third proportional to 61.49 and 108.11 is: 190.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.49 : 108.11 = 108.11 : x
  2. Step 2: Convert to fraction form
    61.49/108.11 = 108.11/x
  3. Step 3: Cross multiply
    61.49x = 108.11 × 108.11
  4. Step 4: Simplify right side
    61.49x = 11,686.79
  5. Step 5: Solve for x
    x = 11,686.79/61.49
  6. Step 6: Final answer
    x = 190.07

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.