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Finding the Third Proportional to 68,319 and 99,126

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Solution

The third proportional to 68,319 and 99,126 is: 143,824.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,319 : 99,126 = 99,126 : x
  2. Step 2: Convert to fraction form
    68,319/99,126 = 99,126/x
  3. Step 3: Cross multiply
    68,319x = 99,126 × 99,126
  4. Step 4: Simplify right side
    68,319x = 9,825,963,876
  5. Step 5: Solve for x
    x = 9,825,963,876/68,319
  6. Step 6: Final answer
    x = 143,824.76

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.