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Finding the Third Proportional to 84,790 and 181,872

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Solution

The third proportional to 84,790 and 181,872 is: 390,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,790 : 181,872 = 181,872 : x
  2. Step 2: Convert to fraction form
    84,790/181,872 = 181,872/x
  3. Step 3: Cross multiply
    84,790x = 181,872 × 181,872
  4. Step 4: Simplify right side
    84,790x = 33,077,424,384
  5. Step 5: Solve for x
    x = 33,077,424,384/84,790
  6. Step 6: Final answer
    x = 390,109.97

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.