Home / 100,138.38-150,232.14-30,017.64

Finding the Fourth Proportional to 100,138.38, 150,232.14 and 30,017.64

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Solution

The fourth proportional to 100,138.38, 150,232.14 and 30,017.64 is: 45,033.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,138.38 : 150,232.14 = 30,017.64 : x
  2. Step 2: Convert to fraction form
    100,138.38/150,232.14 = 30,017.64/x
  3. Step 3: Cross multiply
    100,138.38x = 150,232.14 × 30,017.64
  4. Step 4: Simplify right side
    100,138.38x = 4,509,614,294.95
  5. Step 5: Solve for x
    x = 4,509,614,294.95/100,138.38
  6. Step 6: Final answer
    x = 45,033.83

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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.