Home / 198,930.23-274,527.21-108,288.80

Finding the Fourth Proportional to 198,930.23, 274,527.21 and 108,288.80

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Solution

The fourth proportional to 198,930.23, 274,527.21 and 108,288.80 is: 149,440.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,930.23 : 274,527.21 = 108,288.80 : x
  2. Step 2: Convert to fraction form
    198,930.23/274,527.21 = 108,288.80/x
  3. Step 3: Cross multiply
    198,930.23x = 274,527.21 × 108,288.80
  4. Step 4: Simplify right side
    198,930.23x = 29,728,222,138.25
  5. Step 5: Solve for x
    x = 29,728,222,138.25/198,930.23
  6. Step 6: Final answer
    x = 149,440.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.