Home / 91,380.12-137,093.76-28,198.86

Finding the Fourth Proportional to 91,380.12, 137,093.76 and 28,198.86

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Solution

The fourth proportional to 91,380.12, 137,093.76 and 28,198.86 is: 42,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,380.12 : 137,093.76 = 28,198.86 : x
  2. Step 2: Convert to fraction form
    91,380.12/137,093.76 = 28,198.86/x
  3. Step 3: Cross multiply
    91,380.12x = 137,093.76 × 28,198.86
  4. Step 4: Simplify right side
    91,380.12x = 3,865,887,745.11
  5. Step 5: Solve for x
    x = 3,865,887,745.11/91,380.12
  6. Step 6: Final answer
    x = 42,305.57

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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.