Home / 159,198.21-219,689.94-87,576.66

Finding the Fourth Proportional to 159,198.21, 219,689.94 and 87,576.66

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Solution

The fourth proportional to 159,198.21, 219,689.94 and 87,576.66 is: 120,853.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,198.21 : 219,689.94 = 87,576.66 : x
  2. Step 2: Convert to fraction form
    159,198.21/219,689.94 = 87,576.66/x
  3. Step 3: Cross multiply
    159,198.21x = 219,689.94 × 87,576.66
  4. Step 4: Simplify right side
    159,198.21x = 19,239,711,180.80
  5. Step 5: Solve for x
    x = 19,239,711,180.80/159,198.21
  6. Step 6: Final answer
    x = 120,853.82

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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.