Home / 100,441.28-150,686.32-30,316.40

Finding the Fourth Proportional to 100,441.28, 150,686.32 and 30,316.40

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Solution

The fourth proportional to 100,441.28, 150,686.32 and 30,316.40 is: 45,481.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,441.28 : 150,686.32 = 30,316.40 : x
  2. Step 2: Convert to fraction form
    100,441.28/150,686.32 = 30,316.40/x
  3. Step 3: Cross multiply
    100,441.28x = 150,686.32 × 30,316.40
  4. Step 4: Simplify right side
    100,441.28x = 4,568,266,751.65
  5. Step 5: Solve for x
    x = 4,568,266,751.65/100,441.28
  6. Step 6: Final answer
    x = 45,481.96

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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.