Home / 128,544.20-192,735.30-53,716.40

Finding the Fourth Proportional to 128,544.20, 192,735.30 and 53,716.40

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Solution

The fourth proportional to 128,544.20, 192,735.30 and 53,716.40 is: 80,540.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,544.20 : 192,735.30 = 53,716.40 : x
  2. Step 2: Convert to fraction form
    128,544.20/192,735.30 = 53,716.40/x
  3. Step 3: Cross multiply
    128,544.20x = 192,735.30 × 53,716.40
  4. Step 4: Simplify right side
    128,544.20x = 10,353,046,468.92
  5. Step 5: Solve for x
    x = 10,353,046,468.92/128,544.20
  6. Step 6: Final answer
    x = 80,540.75

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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.