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Finding the Fourth Proportional to 192,729.70, 288,971.22 and 92,690.65

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Solution

The fourth proportional to 192,729.70, 288,971.22 and 92,690.65 is: 138,976.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,729.70 : 288,971.22 = 92,690.65 : x
  2. Step 2: Convert to fraction form
    192,729.70/288,971.22 = 92,690.65/x
  3. Step 3: Cross multiply
    192,729.70x = 288,971.22 × 92,690.65
  4. Step 4: Simplify right side
    192,729.70x = 26,784,930,213.09
  5. Step 5: Solve for x
    x = 26,784,930,213.09/192,729.70
  6. Step 6: Final answer
    x = 138,976.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.