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Finding the Fourth Proportional to 120,067.68, 180,086.88 and 49,937.84

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Solution

The fourth proportional to 120,067.68, 180,086.88 and 49,937.84 is: 74,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,067.68 : 180,086.88 = 49,937.84 : x
  2. Step 2: Convert to fraction form
    120,067.68/180,086.88 = 49,937.84/x
  3. Step 3: Cross multiply
    120,067.68x = 180,086.88 × 49,937.84
  4. Step 4: Simplify right side
    120,067.68x = 8,993,149,799.54
  5. Step 5: Solve for x
    x = 8,993,149,799.54/120,067.68
  6. Step 6: Final answer
    x = 74,900.67

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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.