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Finding the Third Proportional to 82,100 and 177,020

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Solution

The third proportional to 82,100 and 177,020 is: 381,681.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,100 : 177,020 = 177,020 : x
  2. Step 2: Convert to fraction form
    82,100/177,020 = 177,020/x
  3. Step 3: Cross multiply
    82,100x = 177,020 × 177,020
  4. Step 4: Simplify right side
    82,100x = 31,336,080,400
  5. Step 5: Solve for x
    x = 31,336,080,400/82,100
  6. Step 6: Final answer
    x = 381,681.86

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.