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Finding the Third Proportional to 84,396 and 126,786

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Solution

The third proportional to 84,396 and 126,786 is: 190,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,396 : 126,786 = 126,786 : x
  2. Step 2: Convert to fraction form
    84,396/126,786 = 126,786/x
  3. Step 3: Cross multiply
    84,396x = 126,786 × 126,786
  4. Step 4: Simplify right side
    84,396x = 16,074,689,796
  5. Step 5: Solve for x
    x = 16,074,689,796/84,396
  6. Step 6: Final answer
    x = 190,467.44

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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.