Home / 90,198.36-135,298.46-40,281

Finding the Fourth Proportional to 90,198.36, 135,298.46 and 40,281

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Solution

The fourth proportional to 90,198.36, 135,298.46 and 40,281 is: 60,421.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,198.36 : 135,298.46 = 40,281 : x
  2. Step 2: Convert to fraction form
    90,198.36/135,298.46 = 40,281/x
  3. Step 3: Cross multiply
    90,198.36x = 135,298.46 × 40,281
  4. Step 4: Simplify right side
    90,198.36x = 5,449,957,267.26
  5. Step 5: Solve for x
    x = 5,449,957,267.26/90,198.36
  6. Step 6: Final answer
    x = 60,421.91

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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.