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Finding the Third Proportional to 86.06 and 126.98

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Solution

The third proportional to 86.06 and 126.98 is: 187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.06 : 126.98 = 126.98 : x
  2. Step 2: Convert to fraction form
    86.06/126.98 = 126.98/x
  3. Step 3: Cross multiply
    86.06x = 126.98 × 126.98
  4. Step 4: Simplify right side
    86.06x = 16,125.03
  5. Step 5: Solve for x
    x = 16,125.03/86.06
  6. Step 6: Final answer
    x = 187.36

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.