Home / 198,736.40-298,104.30-80,408.66

Finding the Fourth Proportional to 198,736.40, 298,104.30 and 80,408.66

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Solution

The fourth proportional to 198,736.40, 298,104.30 and 80,408.66 is: 120,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,736.40 : 298,104.30 = 80,408.66 : x
  2. Step 2: Convert to fraction form
    198,736.40/298,104.30 = 80,408.66/x
  3. Step 3: Cross multiply
    198,736.40x = 298,104.30 × 80,408.66
  4. Step 4: Simplify right side
    198,736.40x = 23,970,167,303.24
  5. Step 5: Solve for x
    x = 23,970,167,303.24/198,736.40
  6. Step 6: Final answer
    x = 120,612.87

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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.