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Finding the Third Proportional to 73,985 and 161,812

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Solution

The third proportional to 73,985 and 161,812 is: 353,897.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,985 : 161,812 = 161,812 : x
  2. Step 2: Convert to fraction form
    73,985/161,812 = 161,812/x
  3. Step 3: Cross multiply
    73,985x = 161,812 × 161,812
  4. Step 4: Simplify right side
    73,985x = 26,183,123,344
  5. Step 5: Solve for x
    x = 26,183,123,344/73,985
  6. Step 6: Final answer
    x = 353,897.73

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.