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Finding the Third Proportional to 81,619 and 119,632

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Solution

The third proportional to 81,619 and 119,632 is: 175,349.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619 : 119,632 = 119,632 : x
  2. Step 2: Convert to fraction form
    81,619/119,632 = 119,632/x
  3. Step 3: Cross multiply
    81,619x = 119,632 × 119,632
  4. Step 4: Simplify right side
    81,619x = 14,311,815,424
  5. Step 5: Solve for x
    x = 14,311,815,424/81,619
  6. Step 6: Final answer
    x = 175,349.07

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.