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Finding the Fourth Proportional to 192,996.80, 289,322.40 and 126,468.80

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Solution

The fourth proportional to 192,996.80, 289,322.40 and 126,468.80 is: 189,589.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,996.80 : 289,322.40 = 126,468.80 : x
  2. Step 2: Convert to fraction form
    192,996.80/289,322.40 = 126,468.80/x
  3. Step 3: Cross multiply
    192,996.80x = 289,322.40 × 126,468.80
  4. Step 4: Simplify right side
    192,996.80x = 36,590,256,741.12
  5. Step 5: Solve for x
    x = 36,590,256,741.12/192,996.80
  6. Step 6: Final answer
    x = 189,589.97

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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.