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Finding the Fourth Proportional to 192,756.69, 289,021.41 and 90,060.42

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Solution

The fourth proportional to 192,756.69, 289,021.41 and 90,060.42 is: 135,037.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,756.69 : 289,021.41 = 90,060.42 : x
  2. Step 2: Convert to fraction form
    192,756.69/289,021.41 = 90,060.42/x
  3. Step 3: Cross multiply
    192,756.69x = 289,021.41 × 90,060.42
  4. Step 4: Simplify right side
    192,756.69x = 26,029,389,573.59
  5. Step 5: Solve for x
    x = 26,029,389,573.59/192,756.69
  6. Step 6: Final answer
    x = 135,037.54

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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.