Home / 100,443.28-150,660.60-30,320.50

Finding the Fourth Proportional to 100,443.28, 150,660.60 and 30,320.50

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Solution

The fourth proportional to 100,443.28, 150,660.60 and 30,320.50 is: 45,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,443.28 : 150,660.60 = 30,320.50 : x
  2. Step 2: Convert to fraction form
    100,443.28/150,660.60 = 30,320.50/x
  3. Step 3: Cross multiply
    100,443.28x = 150,660.60 × 30,320.50
  4. Step 4: Simplify right side
    100,443.28x = 4,568,104,722.30
  5. Step 5: Solve for x
    x = 4,568,104,722.30/100,443.28
  6. Step 6: Final answer
    x = 45,479.45

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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.