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Finding the Third Proportional to 84,686 and 180,620

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Solution

The third proportional to 84,686 and 180,620 is: 385,229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,686 : 180,620 = 180,620 : x
  2. Step 2: Convert to fraction form
    84,686/180,620 = 180,620/x
  3. Step 3: Cross multiply
    84,686x = 180,620 × 180,620
  4. Step 4: Simplify right side
    84,686x = 32,623,584,400
  5. Step 5: Solve for x
    x = 32,623,584,400/84,686
  6. Step 6: Final answer
    x = 385,229.96

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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.