Home / 192,488.70-288,782.19-80,131.56

Finding the Fourth Proportional to 192,488.70, 288,782.19 and 80,131.56

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Solution

The fourth proportional to 192,488.70, 288,782.19 and 80,131.56 is: 120,217.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,488.70 : 288,782.19 = 80,131.56 : x
  2. Step 2: Convert to fraction form
    192,488.70/288,782.19 = 80,131.56/x
  3. Step 3: Cross multiply
    192,488.70x = 288,782.19 × 80,131.56
  4. Step 4: Simplify right side
    192,488.70x = 23,140,567,384.92
  5. Step 5: Solve for x
    x = 23,140,567,384.92/192,488.70
  6. Step 6: Final answer
    x = 120,217.80

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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.