Home / 198,741.20-297,881.40-80,334.80

Finding the Fourth Proportional to 198,741.20, 297,881.40 and 80,334.80

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Solution

The fourth proportional to 198,741.20, 297,881.40 and 80,334.80 is: 120,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,741.20 : 297,881.40 = 80,334.80 : x
  2. Step 2: Convert to fraction form
    198,741.20/297,881.40 = 80,334.80/x
  3. Step 3: Cross multiply
    198,741.20x = 297,881.40 × 80,334.80
  4. Step 4: Simplify right side
    198,741.20x = 23,930,242,692.72
  5. Step 5: Solve for x
    x = 23,930,242,692.72/198,741.20
  6. Step 6: Final answer
    x = 120,409.07

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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.