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Finding the Third Proportional to 64,722 and 142,452

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Solution

The third proportional to 64,722 and 142,452 is: 313,534.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,722 : 142,452 = 142,452 : x
  2. Step 2: Convert to fraction form
    64,722/142,452 = 142,452/x
  3. Step 3: Cross multiply
    64,722x = 142,452 × 142,452
  4. Step 4: Simplify right side
    64,722x = 20,292,572,304
  5. Step 5: Solve for x
    x = 20,292,572,304/64,722
  6. Step 6: Final answer
    x = 313,534.38

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.