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Finding the Fourth Proportional to 100,439.74, 150,671.13 and 30,323.26

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Solution

The fourth proportional to 100,439.74, 150,671.13 and 30,323.26 is: 45,488.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,439.74 : 150,671.13 = 30,323.26 : x
  2. Step 2: Convert to fraction form
    100,439.74/150,671.13 = 30,323.26/x
  3. Step 3: Cross multiply
    100,439.74x = 150,671.13 × 30,323.26
  4. Step 4: Simplify right side
    100,439.74x = 4,568,839,849.48
  5. Step 5: Solve for x
    x = 4,568,839,849.48/100,439.74
  6. Step 6: Final answer
    x = 45,488.37

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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.