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Finding the Third Proportional to 90,992 and 140,376

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Solution

The third proportional to 90,992 and 140,376 is: 216,562.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992 : 140,376 = 140,376 : x
  2. Step 2: Convert to fraction form
    90,992/140,376 = 140,376/x
  3. Step 3: Cross multiply
    90,992x = 140,376 × 140,376
  4. Step 4: Simplify right side
    90,992x = 19,705,421,376
  5. Step 5: Solve for x
    x = 19,705,421,376/90,992
  6. Step 6: Final answer
    x = 216,562.13

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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.