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Finding the Third Proportional to 80,790 and 176,970

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Solution

The third proportional to 80,790 and 176,970 is: 387,651.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,790 : 176,970 = 176,970 : x
  2. Step 2: Convert to fraction form
    80,790/176,970 = 176,970/x
  3. Step 3: Cross multiply
    80,790x = 176,970 × 176,970
  4. Step 4: Simplify right side
    80,790x = 31,318,380,900
  5. Step 5: Solve for x
    x = 31,318,380,900/80,790
  6. Step 6: Final answer
    x = 387,651.70

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.