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Finding the Third Proportional to 80,428.50 and 133,278.75

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Solution

The third proportional to 80,428.50 and 133,278.75 is: 220,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,428.50 : 133,278.75 = 133,278.75 : x
  2. Step 2: Convert to fraction form
    80,428.50/133,278.75 = 133,278.75/x
  3. Step 3: Cross multiply
    80,428.50x = 133,278.75 × 133,278.75
  4. Step 4: Simplify right side
    80,428.50x = 17,763,225,201.56
  5. Step 5: Solve for x
    x = 17,763,225,201.56/80,428.50
  6. Step 6: Final answer
    x = 220,857.35

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.