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Finding the Third Proportional to 84,539 and 126,543

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Solution

The third proportional to 84,539 and 126,543 is: 189,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,539 : 126,543 = 126,543 : x
  2. Step 2: Convert to fraction form
    84,539/126,543 = 126,543/x
  3. Step 3: Cross multiply
    84,539x = 126,543 × 126,543
  4. Step 4: Simplify right side
    84,539x = 16,013,130,849
  5. Step 5: Solve for x
    x = 16,013,130,849/84,539
  6. Step 6: Final answer
    x = 189,417.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.