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Finding the Fourth Proportional to 100,249.59, 150,270.71 and 47,619.03

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Solution

The fourth proportional to 100,249.59, 150,270.71 and 47,619.03 is: 71,379.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,249.59 : 150,270.71 = 47,619.03 : x
  2. Step 2: Convert to fraction form
    100,249.59/150,270.71 = 47,619.03/x
  3. Step 3: Cross multiply
    100,249.59x = 150,270.71 × 47,619.03
  4. Step 4: Simplify right side
    100,249.59x = 7,155,745,209.52
  5. Step 5: Solve for x
    x = 7,155,745,209.52/100,249.59
  6. Step 6: Final answer
    x = 71,379.30

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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.