Home / 149,424.68-206,206.22-81,441.71

Finding the Fourth Proportional to 149,424.68, 206,206.22 and 81,441.71

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Solution

The fourth proportional to 149,424.68, 206,206.22 and 81,441.71 is: 112,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,424.68 : 206,206.22 = 81,441.71 : x
  2. Step 2: Convert to fraction form
    149,424.68/206,206.22 = 81,441.71/x
  3. Step 3: Cross multiply
    149,424.68x = 206,206.22 × 81,441.71
  4. Step 4: Simplify right side
    149,424.68x = 16,793,787,169.44
  5. Step 5: Solve for x
    x = 16,793,787,169.44/149,424.68
  6. Step 6: Final answer
    x = 112,389.65

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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.