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Finding the Third Proportional to 56,728 and 120,908

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Solution

The third proportional to 56,728 and 120,908 is: 257,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,728 : 120,908 = 120,908 : x
  2. Step 2: Convert to fraction form
    56,728/120,908 = 120,908/x
  3. Step 3: Cross multiply
    56,728x = 120,908 × 120,908
  4. Step 4: Simplify right side
    56,728x = 14,618,744,464
  5. Step 5: Solve for x
    x = 14,618,744,464/56,728
  6. Step 6: Final answer
    x = 257,698.92

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.