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Finding the Third Proportional to 68,200 and 148,790

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Solution

The third proportional to 68,200 and 148,790 is: 324,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,200 : 148,790 = 148,790 : x
  2. Step 2: Convert to fraction form
    68,200/148,790 = 148,790/x
  3. Step 3: Cross multiply
    68,200x = 148,790 × 148,790
  4. Step 4: Simplify right side
    68,200x = 22,138,464,100
  5. Step 5: Solve for x
    x = 22,138,464,100/68,200
  6. Step 6: Final answer
    x = 324,610.91

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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.