Home / 280,846.20-421,269.30-81,173.10

Finding the Fourth Proportional to 280,846.20, 421,269.30 and 81,173.10

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Solution

The fourth proportional to 280,846.20, 421,269.30 and 81,173.10 is: 121,759.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,846.20 : 421,269.30 = 81,173.10 : x
  2. Step 2: Convert to fraction form
    280,846.20/421,269.30 = 81,173.10/x
  3. Step 3: Cross multiply
    280,846.20x = 421,269.30 × 81,173.10
  4. Step 4: Simplify right side
    280,846.20x = 34,195,735,015.83
  5. Step 5: Solve for x
    x = 34,195,735,015.83/280,846.20
  6. Step 6: Final answer
    x = 121,759.65

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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.