Home / 90,161.28-135,245-30,996.44

Finding the Fourth Proportional to 90,161.28, 135,245 and 30,996.44

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Solution

The fourth proportional to 90,161.28, 135,245 and 30,996.44 is: 46,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,161.28 : 135,245 = 30,996.44 : x
  2. Step 2: Convert to fraction form
    90,161.28/135,245 = 30,996.44/x
  3. Step 3: Cross multiply
    90,161.28x = 135,245 × 30,996.44
  4. Step 4: Simplify right side
    90,161.28x = 4,192,113,527.80
  5. Step 5: Solve for x
    x = 4,192,113,527.80/90,161.28
  6. Step 6: Final answer
    x = 46,495.72

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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.