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Finding the Third Proportional to 55,977 and 121,800

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Solution

The third proportional to 55,977 and 121,800 is: 265,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,977 : 121,800 = 121,800 : x
  2. Step 2: Convert to fraction form
    55,977/121,800 = 121,800/x
  3. Step 3: Cross multiply
    55,977x = 121,800 × 121,800
  4. Step 4: Simplify right side
    55,977x = 14,835,240,000
  5. Step 5: Solve for x
    x = 14,835,240,000/55,977
  6. Step 6: Final answer
    x = 265,023.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.