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Finding the Third Proportional to 84,511 and 126,503

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Solution

The third proportional to 84,511 and 126,503 is: 189,360.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,511 : 126,503 = 126,503 : x
  2. Step 2: Convert to fraction form
    84,511/126,503 = 126,503/x
  3. Step 3: Cross multiply
    84,511x = 126,503 × 126,503
  4. Step 4: Simplify right side
    84,511x = 16,003,009,009
  5. Step 5: Solve for x
    x = 16,003,009,009/84,511
  6. Step 6: Final answer
    x = 189,360.07

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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.