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Finding the Third Proportional to 80,520.75 and 171,409.50

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Solution

The third proportional to 80,520.75 and 171,409.50 is: 364,890.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.75 : 171,409.50 = 171,409.50 : x
  2. Step 2: Convert to fraction form
    80,520.75/171,409.50 = 171,409.50/x
  3. Step 3: Cross multiply
    80,520.75x = 171,409.50 × 171,409.50
  4. Step 4: Simplify right side
    80,520.75x = 29,381,216,690.25
  5. Step 5: Solve for x
    x = 29,381,216,690.25/80,520.75
  6. Step 6: Final answer
    x = 364,890.00

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.