Home / 148,845.37-205,405.78-80,861.80

Finding the Fourth Proportional to 148,845.37, 205,405.78 and 80,861.80

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Solution

The fourth proportional to 148,845.37, 205,405.78 and 80,861.80 is: 111,588.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,845.37 : 205,405.78 = 80,861.80 : x
  2. Step 2: Convert to fraction form
    148,845.37/205,405.78 = 80,861.80/x
  3. Step 3: Cross multiply
    148,845.37x = 205,405.78 × 80,861.80
  4. Step 4: Simplify right side
    148,845.37x = 16,609,481,101.20
  5. Step 5: Solve for x
    x = 16,609,481,101.20/148,845.37
  6. Step 6: Final answer
    x = 111,588.83

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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.