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Finding the Fourth Proportional to 100,362.09, 150,543.20 and 25,487.85

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Solution

The fourth proportional to 100,362.09, 150,543.20 and 25,487.85 is: 38,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.09 : 150,543.20 = 25,487.85 : x
  2. Step 2: Convert to fraction form
    100,362.09/150,543.20 = 25,487.85/x
  3. Step 3: Cross multiply
    100,362.09x = 150,543.20 × 25,487.85
  4. Step 4: Simplify right side
    100,362.09x = 3,837,022,500.12
  5. Step 5: Solve for x
    x = 3,837,022,500.12/100,362.09
  6. Step 6: Final answer
    x = 38,231.79

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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.