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Finding the Fourth Proportional to 192,760.80, 289,270.80 and 108,520.80

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Solution

The fourth proportional to 192,760.80, 289,270.80 and 108,520.80 is: 162,854.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,760.80 : 289,270.80 = 108,520.80 : x
  2. Step 2: Convert to fraction form
    192,760.80/289,270.80 = 108,520.80/x
  3. Step 3: Cross multiply
    192,760.80x = 289,270.80 × 108,520.80
  4. Step 4: Simplify right side
    192,760.80x = 31,391,898,632.64
  5. Step 5: Solve for x
    x = 31,391,898,632.64/192,760.80
  6. Step 6: Final answer
    x = 162,854.16

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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.