Home / 148,120.88-204,405.96-80,137.68

Finding the Fourth Proportional to 148,120.88, 204,405.96 and 80,137.68

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Solution

The fourth proportional to 148,120.88, 204,405.96 and 80,137.68 is: 110,589.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,120.88 : 204,405.96 = 80,137.68 : x
  2. Step 2: Convert to fraction form
    148,120.88/204,405.96 = 80,137.68/x
  3. Step 3: Cross multiply
    148,120.88x = 204,405.96 × 80,137.68
  4. Step 4: Simplify right side
    148,120.88x = 16,380,619,412.57
  5. Step 5: Solve for x
    x = 16,380,619,412.57/148,120.88
  6. Step 6: Final answer
    x = 110,589.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.