Home / 120,163.58-180,401.19-80,436.72

Finding the Fourth Proportional to 120,163.58, 180,401.19 and 80,436.72

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Solution

The fourth proportional to 120,163.58, 180,401.19 and 80,436.72 is: 120,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163.58 : 180,401.19 = 80,436.72 : x
  2. Step 2: Convert to fraction form
    120,163.58/180,401.19 = 80,436.72/x
  3. Step 3: Cross multiply
    120,163.58x = 180,401.19 × 80,436.72
  4. Step 4: Simplify right side
    120,163.58x = 14,510,880,007.70
  5. Step 5: Solve for x
    x = 14,510,880,007.70/120,163.58
  6. Step 6: Final answer
    x = 120,759.38

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1.5x scale

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.