Home / 280,172.10-419,872.68-120,056.37

Finding the Fourth Proportional to 280,172.10, 419,872.68 and 120,056.37

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Solution

The fourth proportional to 280,172.10, 419,872.68 and 120,056.37 is: 179,919.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,172.10 : 419,872.68 = 120,056.37 : x
  2. Step 2: Convert to fraction form
    280,172.10/419,872.68 = 120,056.37/x
  3. Step 3: Cross multiply
    280,172.10x = 419,872.68 × 120,056.37
  4. Step 4: Simplify right side
    280,172.10x = 50,408,389,822.97
  5. Step 5: Solve for x
    x = 50,408,389,822.97/280,172.10
  6. Step 6: Final answer
    x = 179,919.38

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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.