Home / 90,185.18-135,308.78-40,299.71

Finding the Fourth Proportional to 90,185.18, 135,308.78 and 40,299.71

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Solution

The fourth proportional to 90,185.18, 135,308.78 and 40,299.71 is: 60,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,185.18 : 135,308.78 = 40,299.71 : x
  2. Step 2: Convert to fraction form
    90,185.18/135,308.78 = 40,299.71/x
  3. Step 3: Cross multiply
    90,185.18x = 135,308.78 × 40,299.71
  4. Step 4: Simplify right side
    90,185.18x = 5,452,903,716.41
  5. Step 5: Solve for x
    x = 5,452,903,716.41/90,185.18
  6. Step 6: Final answer
    x = 60,463.42

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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.