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Finding the Third Proportional to 63,489 and 135,723

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Solution

The third proportional to 63,489 and 135,723 is: 290,140.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,489 : 135,723 = 135,723 : x
  2. Step 2: Convert to fraction form
    63,489/135,723 = 135,723/x
  3. Step 3: Cross multiply
    63,489x = 135,723 × 135,723
  4. Step 4: Simplify right side
    63,489x = 18,420,732,729
  5. Step 5: Solve for x
    x = 18,420,732,729/63,489
  6. Step 6: Final answer
    x = 290,140.54

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.