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Finding the Third Proportional to 129,622 and 199,965

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Solution

The third proportional to 129,622 and 199,965 is: 308,481.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,622 : 199,965 = 199,965 : x
  2. Step 2: Convert to fraction form
    129,622/199,965 = 199,965/x
  3. Step 3: Cross multiply
    129,622x = 199,965 × 199,965
  4. Step 4: Simplify right side
    129,622x = 39,986,001,225
  5. Step 5: Solve for x
    x = 39,986,001,225/129,622
  6. Step 6: Final answer
    x = 308,481.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.