Home / 198,561.12-297,989.34-80,233.47

Finding the Fourth Proportional to 198,561.12, 297,989.34 and 80,233.47

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Solution

The fourth proportional to 198,561.12, 297,989.34 and 80,233.47 is: 120,409.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,561.12 : 297,989.34 = 80,233.47 : x
  2. Step 2: Convert to fraction form
    198,561.12/297,989.34 = 80,233.47/x
  3. Step 3: Cross multiply
    198,561.12x = 297,989.34 × 80,233.47
  4. Step 4: Simplify right side
    198,561.12x = 23,908,718,771.21
  5. Step 5: Solve for x
    x = 23,908,718,771.21/198,561.12
  6. Step 6: Final answer
    x = 120,409.87

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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.