Home / 80,143.74-120,137.49-33,409.98

Finding the Fourth Proportional to 80,143.74, 120,137.49 and 33,409.98

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Solution

The fourth proportional to 80,143.74, 120,137.49 and 33,409.98 is: 50,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,143.74 : 120,137.49 = 33,409.98 : x
  2. Step 2: Convert to fraction form
    80,143.74/120,137.49 = 33,409.98/x
  3. Step 3: Cross multiply
    80,143.74x = 120,137.49 × 33,409.98
  4. Step 4: Simplify right side
    80,143.74x = 4,013,791,138.15
  5. Step 5: Solve for x
    x = 4,013,791,138.15/80,143.74
  6. Step 6: Final answer
    x = 50,082.40

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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.