Home / 215,121.12-322,725.24-90,462

Finding the Fourth Proportional to 215,121.12, 322,725.24 and 90,462

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Solution

The fourth proportional to 215,121.12, 322,725.24 and 90,462 is: 135,711.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,121.12 : 322,725.24 = 90,462 : x
  2. Step 2: Convert to fraction form
    215,121.12/322,725.24 = 90,462/x
  3. Step 3: Cross multiply
    215,121.12x = 322,725.24 × 90,462
  4. Step 4: Simplify right side
    215,121.12x = 29,194,370,660.88
  5. Step 5: Solve for x
    x = 29,194,370,660.88/215,121.12
  6. Step 6: Final answer
    x = 135,711.32

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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.