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Finding the Fourth Proportional to 131,065.56, 180,865.17 and 80,163.54

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Solution

The fourth proportional to 131,065.56, 180,865.17 and 80,163.54 is: 110,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,065.56 : 180,865.17 = 80,163.54 : x
  2. Step 2: Convert to fraction form
    131,065.56/180,865.17 = 80,163.54/x
  3. Step 3: Cross multiply
    131,065.56x = 180,865.17 × 80,163.54
  4. Step 4: Simplify right side
    131,065.56x = 14,498,792,289.90
  5. Step 5: Solve for x
    x = 14,498,792,289.90/131,065.56
  6. Step 6: Final answer
    x = 110,622.44

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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.