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Finding the Third Proportional to 76,819 and 156,687

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Solution

The third proportional to 76,819 and 156,687 is: 319,593.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,819 : 156,687 = 156,687 : x
  2. Step 2: Convert to fraction form
    76,819/156,687 = 156,687/x
  3. Step 3: Cross multiply
    76,819x = 156,687 × 156,687
  4. Step 4: Simplify right side
    76,819x = 24,550,815,969
  5. Step 5: Solve for x
    x = 24,550,815,969/76,819
  6. Step 6: Final answer
    x = 319,593.02

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.