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Finding the Third Proportional to 81,200 and 177,118

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Solution

The third proportional to 81,200 and 177,118 is: 386,339.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,200 : 177,118 = 177,118 : x
  2. Step 2: Convert to fraction form
    81,200/177,118 = 177,118/x
  3. Step 3: Cross multiply
    81,200x = 177,118 × 177,118
  4. Step 4: Simplify right side
    81,200x = 31,370,785,924
  5. Step 5: Solve for x
    x = 31,370,785,924/81,200
  6. Step 6: Final answer
    x = 386,339.73

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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.