Home / 111,850.38-154,451.97-76,125.74

Finding the Fourth Proportional to 111,850.38, 154,451.97 and 76,125.74

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Solution

The fourth proportional to 111,850.38, 154,451.97 and 76,125.74 is: 105,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,850.38 : 154,451.97 = 76,125.74 : x
  2. Step 2: Convert to fraction form
    111,850.38/154,451.97 = 76,125.74/x
  3. Step 3: Cross multiply
    111,850.38x = 154,451.97 × 76,125.74
  4. Step 4: Simplify right side
    111,850.38x = 11,757,769,738.45
  5. Step 5: Solve for x
    x = 11,757,769,738.45/111,850.38
  6. Step 6: Final answer
    x = 105,120.52

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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.