Home / 128,318.58-192,373.79-53,494.83

Finding the Fourth Proportional to 128,318.58, 192,373.79 and 53,494.83

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Solution

The fourth proportional to 128,318.58, 192,373.79 and 53,494.83 is: 80,198.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,318.58 : 192,373.79 = 53,494.83 : x
  2. Step 2: Convert to fraction form
    128,318.58/192,373.79 = 53,494.83/x
  3. Step 3: Cross multiply
    128,318.58x = 192,373.79 × 53,494.83
  4. Step 4: Simplify right side
    128,318.58x = 10,291,002,925.03
  5. Step 5: Solve for x
    x = 10,291,002,925.03/128,318.58
  6. Step 6: Final answer
    x = 80,198.85

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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.