Home / 128,919.92-193,376.82-75,947.84

Finding the Fourth Proportional to 128,919.92, 193,376.82 and 75,947.84

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Solution

The fourth proportional to 128,919.92, 193,376.82 and 75,947.84 is: 113,919.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,919.92 : 193,376.82 = 75,947.84 : x
  2. Step 2: Convert to fraction form
    128,919.92/193,376.82 = 75,947.84/x
  3. Step 3: Cross multiply
    128,919.92x = 193,376.82 × 75,947.84
  4. Step 4: Simplify right side
    128,919.92x = 14,686,551,785.07
  5. Step 5: Solve for x
    x = 14,686,551,785.07/128,919.92
  6. Step 6: Final answer
    x = 113,919.96

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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.