Home / 149,436.74-206,221.39-81,453.71

Finding the Fourth Proportional to 149,436.74, 206,221.39 and 81,453.71

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Solution

The fourth proportional to 149,436.74, 206,221.39 and 81,453.71 is: 112,405.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,436.74 : 206,221.39 = 81,453.71 : x
  2. Step 2: Convert to fraction form
    149,436.74/206,221.39 = 81,453.71/x
  3. Step 3: Cross multiply
    149,436.74x = 206,221.39 × 81,453.71
  4. Step 4: Simplify right side
    149,436.74x = 16,797,497,608.78
  5. Step 5: Solve for x
    x = 16,797,497,608.78/149,436.74
  6. Step 6: Final answer
    x = 112,405.41

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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.