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Finding the Third Proportional to 84.13 and 112.13

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Solution

The third proportional to 84.13 and 112.13 is: 149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.13 : 112.13 = 112.13 : x
  2. Step 2: Convert to fraction form
    84.13/112.13 = 112.13/x
  3. Step 3: Cross multiply
    84.13x = 112.13 × 112.13
  4. Step 4: Simplify right side
    84.13x = 12,572.02
  5. Step 5: Solve for x
    x = 12,572.02/84.13
  6. Step 6: Final answer
    x = 149.44

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.