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Finding the Third Proportional to 85.88 and 126.19

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Solution

The third proportional to 85.88 and 126.19 is: 185.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85.88 : 126.19 = 126.19 : x
  2. Step 2: Convert to fraction form
    85.88/126.19 = 126.19/x
  3. Step 3: Cross multiply
    85.88x = 126.19 × 126.19
  4. Step 4: Simplify right side
    85.88x = 15,923.29
  5. Step 5: Solve for x
    x = 15,923.29/85.88
  6. Step 6: Final answer
    x = 185.42

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.