Home / 139,770.39-192,833.94-91,400.64

Finding the Fourth Proportional to 139,770.39, 192,833.94 and 91,400.64

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Solution

The fourth proportional to 139,770.39, 192,833.94 and 91,400.64 is: 126,100.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,770.39 : 192,833.94 = 91,400.64 : x
  2. Step 2: Convert to fraction form
    139,770.39/192,833.94 = 91,400.64/x
  3. Step 3: Cross multiply
    139,770.39x = 192,833.94 × 91,400.64
  4. Step 4: Simplify right side
    139,770.39x = 17,625,145,529.72
  5. Step 5: Solve for x
    x = 17,625,145,529.72/139,770.39
  6. Step 6: Final answer
    x = 126,100.71

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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.