Home / 90,121.09-135,151.91-33,181.86

Finding the Fourth Proportional to 90,121.09, 135,151.91 and 33,181.86

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Solution

The fourth proportional to 90,121.09, 135,151.91 and 33,181.86 is: 49,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,121.09 : 135,151.91 = 33,181.86 : x
  2. Step 2: Convert to fraction form
    90,121.09/135,151.91 = 33,181.86/x
  3. Step 3: Cross multiply
    90,121.09x = 135,151.91 × 33,181.86
  4. Step 4: Simplify right side
    90,121.09x = 4,484,591,590.44
  5. Step 5: Solve for x
    x = 4,484,591,590.44/90,121.09
  6. Step 6: Final answer
    x = 49,761.85

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1.5x scale

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.