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Finding the Fourth Proportional to 203,190.65, 280,538.72 and 126,740.42

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Solution

The fourth proportional to 203,190.65, 280,538.72 and 126,740.42 is: 174,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,190.65 : 280,538.72 = 126,740.42 : x
  2. Step 2: Convert to fraction form
    203,190.65/280,538.72 = 126,740.42/x
  3. Step 3: Cross multiply
    203,190.65x = 280,538.72 × 126,740.42
  4. Step 4: Simplify right side
    203,190.65x = 35,555,593,162.67
  5. Step 5: Solve for x
    x = 35,555,593,162.67/203,190.65
  6. Step 6: Final answer
    x = 174,986.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.