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Finding the Third Proportional to 129,871 and 207,467

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Solution

The third proportional to 129,871 and 207,467 is: 331,425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,871 : 207,467 = 207,467 : x
  2. Step 2: Convert to fraction form
    129,871/207,467 = 207,467/x
  3. Step 3: Cross multiply
    129,871x = 207,467 × 207,467
  4. Step 4: Simplify right side
    129,871x = 43,042,556,089
  5. Step 5: Solve for x
    x = 43,042,556,089/129,871
  6. Step 6: Final answer
    x = 331,425.46

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.