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Finding the Fourth Proportional to 126,912.05, 175,134.81 and 69,550.67

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Solution

The fourth proportional to 126,912.05, 175,134.81 and 69,550.67 is: 95,977.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.05 : 175,134.81 = 69,550.67 : x
  2. Step 2: Convert to fraction form
    126,912.05/175,134.81 = 69,550.67/x
  3. Step 3: Cross multiply
    126,912.05x = 175,134.81 × 69,550.67
  4. Step 4: Simplify right side
    126,912.05x = 12,180,743,375.82
  5. Step 5: Solve for x
    x = 12,180,743,375.82/126,912.05
  6. Step 6: Final answer
    x = 95,977.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.