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Finding the Third Proportional to 78,815.50 and 119,041

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Solution

The third proportional to 78,815.50 and 119,041 is: 179,796.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,815.50 : 119,041 = 119,041 : x
  2. Step 2: Convert to fraction form
    78,815.50/119,041 = 119,041/x
  3. Step 3: Cross multiply
    78,815.50x = 119,041 × 119,041
  4. Step 4: Simplify right side
    78,815.50x = 14,170,759,681
  5. Step 5: Solve for x
    x = 14,170,759,681/78,815.50
  6. Step 6: Final answer
    x = 179,796.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.