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Finding the Third Proportional to 84,518 and 131,621.50

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Solution

The third proportional to 84,518 and 131,621.50 is: 204,976.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,518 : 131,621.50 = 131,621.50 : x
  2. Step 2: Convert to fraction form
    84,518/131,621.50 = 131,621.50/x
  3. Step 3: Cross multiply
    84,518x = 131,621.50 × 131,621.50
  4. Step 4: Simplify right side
    84,518x = 17,324,219,262.25
  5. Step 5: Solve for x
    x = 17,324,219,262.25/84,518
  6. Step 6: Final answer
    x = 204,976.68

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.