Home / 200,540.85-276,872.21-129,045.12

Finding the Fourth Proportional to 200,540.85, 276,872.21 and 129,045.12

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Solution

The fourth proportional to 200,540.85, 276,872.21 and 129,045.12 is: 178,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,540.85 : 276,872.21 = 129,045.12 : x
  2. Step 2: Convert to fraction form
    200,540.85/276,872.21 = 129,045.12/x
  3. Step 3: Cross multiply
    200,540.85x = 276,872.21 × 129,045.12
  4. Step 4: Simplify right side
    200,540.85x = 35,729,006,918.89
  5. Step 5: Solve for x
    x = 35,729,006,918.89/200,540.85
  6. Step 6: Final answer
    x = 178,163.24

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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.