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Finding the Third Proportional to 90,455 and 192,930

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Solution

The third proportional to 90,455 and 192,930 is: 411,497.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,455 : 192,930 = 192,930 : x
  2. Step 2: Convert to fraction form
    90,455/192,930 = 192,930/x
  3. Step 3: Cross multiply
    90,455x = 192,930 × 192,930
  4. Step 4: Simplify right side
    90,455x = 37,221,984,900
  5. Step 5: Solve for x
    x = 37,221,984,900/90,455
  6. Step 6: Final answer
    x = 411,497.26

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.