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Finding the Third Proportional to 71,933 and 156,987

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Solution

The third proportional to 71,933 and 156,987 is: 342,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,933 : 156,987 = 156,987 : x
  2. Step 2: Convert to fraction form
    71,933/156,987 = 156,987/x
  3. Step 3: Cross multiply
    71,933x = 156,987 × 156,987
  4. Step 4: Simplify right side
    71,933x = 24,644,918,169
  5. Step 5: Solve for x
    x = 24,644,918,169/71,933
  6. Step 6: Final answer
    x = 342,609.35

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.