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Finding the Third Proportional to 71,372 and 106,879

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Solution

The third proportional to 71,372 and 106,879 is: 160,050.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,372 : 106,879 = 106,879 : x
  2. Step 2: Convert to fraction form
    71,372/106,879 = 106,879/x
  3. Step 3: Cross multiply
    71,372x = 106,879 × 106,879
  4. Step 4: Simplify right side
    71,372x = 11,423,120,641
  5. Step 5: Solve for x
    x = 11,423,120,641/71,372
  6. Step 6: Final answer
    x = 160,050.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.