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Finding the Fourth Proportional to 129,899.69, 194,850.44 and 36,405.44

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Solution

The fourth proportional to 129,899.69, 194,850.44 and 36,405.44 is: 54,608.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,899.69 : 194,850.44 = 36,405.44 : x
  2. Step 2: Convert to fraction form
    129,899.69/194,850.44 = 36,405.44/x
  3. Step 3: Cross multiply
    129,899.69x = 194,850.44 × 36,405.44
  4. Step 4: Simplify right side
    129,899.69x = 7,093,616,002.39
  5. Step 5: Solve for x
    x = 7,093,616,002.39/129,899.69
  6. Step 6: Final answer
    x = 54,608.41

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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.