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Finding the Third Proportional to 107,920 and 220,122

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Solution

The third proportional to 107,920 and 220,122 is: 448,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,920 : 220,122 = 220,122 : x
  2. Step 2: Convert to fraction form
    107,920/220,122 = 220,122/x
  3. Step 3: Cross multiply
    107,920x = 220,122 × 220,122
  4. Step 4: Simplify right side
    107,920x = 48,453,694,884
  5. Step 5: Solve for x
    x = 48,453,694,884/107,920
  6. Step 6: Final answer
    x = 448,977.90

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.