Home / 192,868.08-289,348.31-80,485.78

Finding the Fourth Proportional to 192,868.08, 289,348.31 and 80,485.78

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Solution

The fourth proportional to 192,868.08, 289,348.31 and 80,485.78 is: 120,747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,868.08 : 289,348.31 = 80,485.78 : x
  2. Step 2: Convert to fraction form
    192,868.08/289,348.31 = 80,485.78/x
  3. Step 3: Cross multiply
    192,868.08x = 289,348.31 × 80,485.78
  4. Step 4: Simplify right side
    192,868.08x = 23,288,424,422.03
  5. Step 5: Solve for x
    x = 23,288,424,422.03/192,868.08
  6. Step 6: Final answer
    x = 120,747.95

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1.5x scale

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.