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Finding the Third Proportional to 87,311.81 and 191,769.75

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Solution

The third proportional to 87,311.81 and 191,769.75 is: 421,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,311.81 : 191,769.75 = 191,769.75 : x
  2. Step 2: Convert to fraction form
    87,311.81/191,769.75 = 191,769.75/x
  3. Step 3: Cross multiply
    87,311.81x = 191,769.75 × 191,769.75
  4. Step 4: Simplify right side
    87,311.81x = 36,775,637,015.06
  5. Step 5: Solve for x
    x = 36,775,637,015.06/87,311.81
  6. Step 6: Final answer
    x = 421,198.87

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.