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Finding the Third Proportional to 72,339 and 155,775

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Solution

The third proportional to 72,339 and 155,775 is: 335,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,339 : 155,775 = 155,775 : x
  2. Step 2: Convert to fraction form
    72,339/155,775 = 155,775/x
  3. Step 3: Cross multiply
    72,339x = 155,775 × 155,775
  4. Step 4: Simplify right side
    72,339x = 24,265,850,625
  5. Step 5: Solve for x
    x = 24,265,850,625/72,339
  6. Step 6: Final answer
    x = 335,446.31

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.