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Finding the Third Proportional to 67.88 and 119.75

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Solution

The third proportional to 67.88 and 119.75 is: 211.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    67.88 : 119.75 = 119.75 : x
  2. Step 2: Convert to fraction form
    67.88/119.75 = 119.75/x
  3. Step 3: Cross multiply
    67.88x = 119.75 × 119.75
  4. Step 4: Simplify right side
    67.88x = 14,340.06
  5. Step 5: Solve for x
    x = 14,340.06/67.88
  6. Step 6: Final answer
    x = 211.27

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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.