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Finding the Third Proportional to 90,858 and 133,663

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Solution

The third proportional to 90,858 and 133,663 is: 196,634.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,858 : 133,663 = 133,663 : x
  2. Step 2: Convert to fraction form
    90,858/133,663 = 133,663/x
  3. Step 3: Cross multiply
    90,858x = 133,663 × 133,663
  4. Step 4: Simplify right side
    90,858x = 17,865,797,569
  5. Step 5: Solve for x
    x = 17,865,797,569/90,858
  6. Step 6: Final answer
    x = 196,634.28

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.