Home / 215,611.38-323,059.53-131,115.95

Finding the Fourth Proportional to 215,611.38, 323,059.53 and 131,115.95

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Solution

The fourth proportional to 215,611.38, 323,059.53 and 131,115.95 is: 196,456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,611.38 : 323,059.53 = 131,115.95 : x
  2. Step 2: Convert to fraction form
    215,611.38/323,059.53 = 131,115.95/x
  3. Step 3: Cross multiply
    215,611.38x = 323,059.53 × 131,115.95
  4. Step 4: Simplify right side
    215,611.38x = 42,358,257,182.50
  5. Step 5: Solve for x
    x = 42,358,257,182.50/215,611.38
  6. Step 6: Final answer
    x = 196,456.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.