Home / 143,649.05-198,240.41-82,405.76

Finding the Fourth Proportional to 143,649.05, 198,240.41 and 82,405.76

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Solution

The fourth proportional to 143,649.05, 198,240.41 and 82,405.76 is: 113,722.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,649.05 : 198,240.41 = 82,405.76 : x
  2. Step 2: Convert to fraction form
    143,649.05/198,240.41 = 82,405.76/x
  3. Step 3: Cross multiply
    143,649.05x = 198,240.41 × 82,405.76
  4. Step 4: Simplify right side
    143,649.05x = 16,336,150,863.57
  5. Step 5: Solve for x
    x = 16,336,150,863.57/143,649.05
  6. Step 6: Final answer
    x = 113,722.66

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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.