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Finding the Fourth Proportional to 133,317.38, 200,049.87 and 79,878.03

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Solution

The fourth proportional to 133,317.38, 200,049.87 and 79,878.03 is: 119,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,317.38 : 200,049.87 = 79,878.03 : x
  2. Step 2: Convert to fraction form
    133,317.38/200,049.87 = 79,878.03/x
  3. Step 3: Cross multiply
    133,317.38x = 200,049.87 × 79,878.03
  4. Step 4: Simplify right side
    133,317.38x = 15,979,589,517.36
  5. Step 5: Solve for x
    x = 15,979,589,517.36/133,317.38
  6. Step 6: Final answer
    x = 119,861.27

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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.