Home / 215,751.53-323,630.03-82,639.78

Finding the Fourth Proportional to 215,751.53, 323,630.03 and 82,639.78

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Solution

The fourth proportional to 215,751.53, 323,630.03 and 82,639.78 is: 123,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,751.53 : 323,630.03 = 82,639.78 : x
  2. Step 2: Convert to fraction form
    215,751.53/323,630.03 = 82,639.78/x
  3. Step 3: Cross multiply
    215,751.53x = 323,630.03 × 82,639.78
  4. Step 4: Simplify right side
    215,751.53x = 26,744,713,878.12
  5. Step 5: Solve for x
    x = 26,744,713,878.12/215,751.53
  6. Step 6: Final answer
    x = 123,960.71

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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.