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Finding the Fourth Proportional to 100,231.92, 150,420.60 and 80,745.84

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Solution

The fourth proportional to 100,231.92, 150,420.60 and 80,745.84 is: 121,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,231.92 : 150,420.60 = 80,745.84 : x
  2. Step 2: Convert to fraction form
    100,231.92/150,420.60 = 80,745.84/x
  3. Step 3: Cross multiply
    100,231.92x = 150,420.60 × 80,745.84
  4. Step 4: Simplify right side
    100,231.92x = 12,145,837,700.30
  5. Step 5: Solve for x
    x = 12,145,837,700.30/100,231.92
  6. Step 6: Final answer
    x = 121,177.34

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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.