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Finding the Third Proportional to 57,900 and 120,408

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Solution

The third proportional to 57,900 and 120,408 is: 250,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,900 : 120,408 = 120,408 : x
  2. Step 2: Convert to fraction form
    57,900/120,408 = 120,408/x
  3. Step 3: Cross multiply
    57,900x = 120,408 × 120,408
  4. Step 4: Simplify right side
    57,900x = 14,498,086,464
  5. Step 5: Solve for x
    x = 14,498,086,464/57,900
  6. Step 6: Final answer
    x = 250,398.73

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.