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Finding the Third Proportional to 69,474 and 107,643

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Solution

The third proportional to 69,474 and 107,643 is: 166,782.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,474 : 107,643 = 107,643 : x
  2. Step 2: Convert to fraction form
    69,474/107,643 = 107,643/x
  3. Step 3: Cross multiply
    69,474x = 107,643 × 107,643
  4. Step 4: Simplify right side
    69,474x = 11,587,015,449
  5. Step 5: Solve for x
    x = 11,587,015,449/69,474
  6. Step 6: Final answer
    x = 166,782.04

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.