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Finding the Third Proportional to 82,171 and 117,424

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Solution

The third proportional to 82,171 and 117,424 is: 167,801.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,171 : 117,424 = 117,424 : x
  2. Step 2: Convert to fraction form
    82,171/117,424 = 117,424/x
  3. Step 3: Cross multiply
    82,171x = 117,424 × 117,424
  4. Step 4: Simplify right side
    82,171x = 13,788,395,776
  5. Step 5: Solve for x
    x = 13,788,395,776/82,171
  6. Step 6: Final answer
    x = 167,801.24

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.