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Finding the Third Proportional to 85,814 and 131,275

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Solution

The third proportional to 85,814 and 131,275 is: 200,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,814 : 131,275 = 131,275 : x
  2. Step 2: Convert to fraction form
    85,814/131,275 = 131,275/x
  3. Step 3: Cross multiply
    85,814x = 131,275 × 131,275
  4. Step 4: Simplify right side
    85,814x = 17,233,125,625
  5. Step 5: Solve for x
    x = 17,233,125,625/85,814
  6. Step 6: Final answer
    x = 200,819.51

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.