Home / 80,099.84-120,149.74-30,191.12

Finding the Fourth Proportional to 80,099.84, 120,149.74 and 30,191.12

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Solution

The fourth proportional to 80,099.84, 120,149.74 and 30,191.12 is: 45,286.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,099.84 : 120,149.74 = 30,191.12 : x
  2. Step 2: Convert to fraction form
    80,099.84/120,149.74 = 30,191.12/x
  3. Step 3: Cross multiply
    80,099.84x = 120,149.74 × 30,191.12
  4. Step 4: Simplify right side
    80,099.84x = 3,627,455,218.31
  5. Step 5: Solve for x
    x = 3,627,455,218.31/80,099.84
  6. Step 6: Final answer
    x = 45,286.67

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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.