Home / 128,205.96-192,286.72-34,689.84

Finding the Fourth Proportional to 128,205.96, 192,286.72 and 34,689.84

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Solution

The fourth proportional to 128,205.96, 192,286.72 and 34,689.84 is: 52,028.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,205.96 : 192,286.72 = 34,689.84 : x
  2. Step 2: Convert to fraction form
    128,205.96/192,286.72 = 34,689.84/x
  3. Step 3: Cross multiply
    128,205.96x = 192,286.72 × 34,689.84
  4. Step 4: Simplify right side
    128,205.96x = 6,670,395,550.92
  5. Step 5: Solve for x
    x = 6,670,395,550.92/128,205.96
  6. Step 6: Final answer
    x = 52,028.75

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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.