Home / 149,299.81-206,033.75-82,231.81

Finding the Fourth Proportional to 149,299.81, 206,033.75 and 82,231.81

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Solution

The fourth proportional to 149,299.81, 206,033.75 and 82,231.81 is: 113,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,299.81 : 206,033.75 = 82,231.81 : x
  2. Step 2: Convert to fraction form
    149,299.81/206,033.75 = 82,231.81/x
  3. Step 3: Cross multiply
    149,299.81x = 206,033.75 × 82,231.81
  4. Step 4: Simplify right side
    149,299.81x = 16,942,528,183.59
  5. Step 5: Solve for x
    x = 16,942,528,183.59/149,299.81
  6. Step 6: Final answer
    x = 113,479.90

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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.