Home / 128,074.60-192,100.38-90,794.44

Finding the Fourth Proportional to 128,074.60, 192,100.38 and 90,794.44

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Solution

The fourth proportional to 128,074.60, 192,100.38 and 90,794.44 is: 136,183.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,074.60 : 192,100.38 = 90,794.44 : x
  2. Step 2: Convert to fraction form
    128,074.60/192,100.38 = 90,794.44/x
  3. Step 3: Cross multiply
    128,074.60x = 192,100.38 × 90,794.44
  4. Step 4: Simplify right side
    128,074.60x = 17,441,646,425.89
  5. Step 5: Solve for x
    x = 17,441,646,425.89/128,074.60
  6. Step 6: Final answer
    x = 136,183.49

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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.