Home / 149,558.28-206,391.07-81,576.71

Finding the Fourth Proportional to 149,558.28, 206,391.07 and 81,576.71

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Solution

The fourth proportional to 149,558.28, 206,391.07 and 81,576.71 is: 112,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,558.28 : 206,391.07 = 81,576.71 : x
  2. Step 2: Convert to fraction form
    149,558.28/206,391.07 = 81,576.71/x
  3. Step 3: Cross multiply
    149,558.28x = 206,391.07 × 81,576.71
  4. Step 4: Simplify right side
    149,558.28x = 16,836,704,789.87
  5. Step 5: Solve for x
    x = 16,836,704,789.87/149,558.28
  6. Step 6: Final answer
    x = 112,576.21

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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.