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Finding the Third Proportional to 81,524 and 172,860

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Solution

The third proportional to 81,524 and 172,860 is: 366,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,524 : 172,860 = 172,860 : x
  2. Step 2: Convert to fraction form
    81,524/172,860 = 172,860/x
  3. Step 3: Cross multiply
    81,524x = 172,860 × 172,860
  4. Step 4: Simplify right side
    81,524x = 29,880,579,600
  5. Step 5: Solve for x
    x = 29,880,579,600/81,524
  6. Step 6: Final answer
    x = 366,524.94

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.