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Finding the Fourth Proportional to 192,453.91, 288,761.60 and 85,764.37

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Solution

The fourth proportional to 192,453.91, 288,761.60 and 85,764.37 is: 128,682.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,453.91 : 288,761.60 = 85,764.37 : x
  2. Step 2: Convert to fraction form
    192,453.91/288,761.60 = 85,764.37/x
  3. Step 3: Cross multiply
    192,453.91x = 288,761.60 × 85,764.37
  4. Step 4: Simplify right side
    192,453.91x = 24,765,456,704.19
  5. Step 5: Solve for x
    x = 24,765,456,704.19/192,453.91
  6. Step 6: Final answer
    x = 128,682.53

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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.