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Finding the Third Proportional to 90,722 and 118,587

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Solution

The third proportional to 90,722 and 118,587 is: 155,010.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,722 : 118,587 = 118,587 : x
  2. Step 2: Convert to fraction form
    90,722/118,587 = 118,587/x
  3. Step 3: Cross multiply
    90,722x = 118,587 × 118,587
  4. Step 4: Simplify right side
    90,722x = 14,062,876,569
  5. Step 5: Solve for x
    x = 14,062,876,569/90,722
  6. Step 6: Final answer
    x = 155,010.65

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.