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Finding the Third Proportional to 80,878 and 165,770

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Solution

The third proportional to 80,878 and 165,770 is: 339,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,878 : 165,770 = 165,770 : x
  2. Step 2: Convert to fraction form
    80,878/165,770 = 165,770/x
  3. Step 3: Cross multiply
    80,878x = 165,770 × 165,770
  4. Step 4: Simplify right side
    80,878x = 27,479,692,900
  5. Step 5: Solve for x
    x = 27,479,692,900/80,878
  6. Step 6: Final answer
    x = 339,767.22

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.