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Finding the Third Proportional to 87,408 and 187,278.75

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Solution

The third proportional to 87,408 and 187,278.75 is: 401,259.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,408 : 187,278.75 = 187,278.75 : x
  2. Step 2: Convert to fraction form
    87,408/187,278.75 = 187,278.75/x
  3. Step 3: Cross multiply
    87,408x = 187,278.75 × 187,278.75
  4. Step 4: Simplify right side
    87,408x = 35,073,330,201.56
  5. Step 5: Solve for x
    x = 35,073,330,201.56/87,408
  6. Step 6: Final answer
    x = 401,259.96

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.