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Finding the Third Proportional to 129,235.50 and 193,078.69

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Solution

The third proportional to 129,235.50 and 193,078.69 is: 288,460.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,235.50 : 193,078.69 = 193,078.69 : x
  2. Step 2: Convert to fraction form
    129,235.50/193,078.69 = 193,078.69/x
  3. Step 3: Cross multiply
    129,235.50x = 193,078.69 × 193,078.69
  4. Step 4: Simplify right side
    129,235.50x = 37,279,379,566.72
  5. Step 5: Solve for x
    x = 37,279,379,566.72/129,235.50
  6. Step 6: Final answer
    x = 288,460.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.