Home / 80,140.35-120,204.84-27,548.67

Finding the Fourth Proportional to 80,140.35, 120,204.84 and 27,548.67

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Solution

The fourth proportional to 80,140.35, 120,204.84 and 27,548.67 is: 41,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,140.35 : 120,204.84 = 27,548.67 : x
  2. Step 2: Convert to fraction form
    80,140.35/120,204.84 = 27,548.67/x
  3. Step 3: Cross multiply
    80,140.35x = 120,204.84 × 27,548.67
  4. Step 4: Simplify right side
    80,140.35x = 3,311,483,469.56
  5. Step 5: Solve for x
    x = 3,311,483,469.56/80,140.35
  6. Step 6: Final answer
    x = 41,321.05

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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.