Home / 209,112.11-313,491.83-90,694.25

Finding the Fourth Proportional to 209,112.11, 313,491.83 and 90,694.25

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Solution

The fourth proportional to 209,112.11, 313,491.83 and 90,694.25 is: 135,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,112.11 : 313,491.83 = 90,694.25 : x
  2. Step 2: Convert to fraction form
    209,112.11/313,491.83 = 90,694.25/x
  3. Step 3: Cross multiply
    209,112.11x = 313,491.83 × 90,694.25
  4. Step 4: Simplify right side
    209,112.11x = 28,431,906,733.24
  5. Step 5: Solve for x
    x = 28,431,906,733.24/209,112.11
  6. Step 6: Final answer
    x = 135,964.90

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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.