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Finding the Fourth Proportional to 220,099.58, 330,110.34 and 100,128.66

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Solution

The fourth proportional to 220,099.58, 330,110.34 and 100,128.66 is: 150,175.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,099.58 : 330,110.34 = 100,128.66 : x
  2. Step 2: Convert to fraction form
    220,099.58/330,110.34 = 100,128.66/x
  3. Step 3: Cross multiply
    220,099.58x = 330,110.34 × 100,128.66
  4. Step 4: Simplify right side
    220,099.58x = 33,053,504,382.95
  5. Step 5: Solve for x
    x = 33,053,504,382.95/220,099.58
  6. Step 6: Final answer
    x = 150,175.23

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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.