Home / 90,128.80-135,206.66-33,198.38

Finding the Fourth Proportional to 90,128.80, 135,206.66 and 33,198.38

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Solution

The fourth proportional to 90,128.80, 135,206.66 and 33,198.38 is: 49,802.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,128.80 : 135,206.66 = 33,198.38 : x
  2. Step 2: Convert to fraction form
    90,128.80/135,206.66 = 33,198.38/x
  3. Step 3: Cross multiply
    90,128.80x = 135,206.66 × 33,198.38
  4. Step 4: Simplify right side
    90,128.80x = 4,488,642,278.10
  5. Step 5: Solve for x
    x = 4,488,642,278.10/90,128.80
  6. Step 6: Final answer
    x = 49,802.53

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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.