Home / 198,555.12-297,980.33-80,227.49

Finding the Fourth Proportional to 198,555.12, 297,980.33 and 80,227.49

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Solution

The fourth proportional to 198,555.12, 297,980.33 and 80,227.49 is: 120,400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,555.12 : 297,980.33 = 80,227.49 : x
  2. Step 2: Convert to fraction form
    198,555.12/297,980.33 = 80,227.49/x
  3. Step 3: Cross multiply
    198,555.12x = 297,980.33 × 80,227.49
  4. Step 4: Simplify right side
    198,555.12x = 23,906,212,054.23
  5. Step 5: Solve for x
    x = 23,906,212,054.23/198,555.12
  6. Step 6: Final answer
    x = 120,400.88

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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.