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Finding the Third Proportional to 80,938.50 and 177,939

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Solution

The third proportional to 80,938.50 and 177,939 is: 391,189.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,938.50 : 177,939 = 177,939 : x
  2. Step 2: Convert to fraction form
    80,938.50/177,939 = 177,939/x
  3. Step 3: Cross multiply
    80,938.50x = 177,939 × 177,939
  4. Step 4: Simplify right side
    80,938.50x = 31,662,287,721
  5. Step 5: Solve for x
    x = 31,662,287,721/80,938.50
  6. Step 6: Final answer
    x = 391,189.46

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.