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Finding the Fourth Proportional to 135,879.40, 203,826.20 and 41,107.20

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Solution

The fourth proportional to 135,879.40, 203,826.20 and 41,107.20 is: 61,662.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,879.40 : 203,826.20 = 41,107.20 : x
  2. Step 2: Convert to fraction form
    135,879.40/203,826.20 = 41,107.20/x
  3. Step 3: Cross multiply
    135,879.40x = 203,826.20 × 41,107.20
  4. Step 4: Simplify right side
    135,879.40x = 8,378,724,368.64
  5. Step 5: Solve for x
    x = 8,378,724,368.64/135,879.40
  6. Step 6: Final answer
    x = 61,662.95

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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.