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Finding the Third Proportional to 55,700 and 120,279

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Solution

The third proportional to 55,700 and 120,279 is: 259,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,700 : 120,279 = 120,279 : x
  2. Step 2: Convert to fraction form
    55,700/120,279 = 120,279/x
  3. Step 3: Cross multiply
    55,700x = 120,279 × 120,279
  4. Step 4: Simplify right side
    55,700x = 14,467,037,841
  5. Step 5: Solve for x
    x = 14,467,037,841/55,700
  6. Step 6: Final answer
    x = 259,731.38

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.