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Finding the Fourth Proportional to 192,971.41, 289,375.09 and 79,040.67

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Solution

The fourth proportional to 192,971.41, 289,375.09 and 79,040.67 is: 118,527.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,971.41 : 289,375.09 = 79,040.67 : x
  2. Step 2: Convert to fraction form
    192,971.41/289,375.09 = 79,040.67/x
  3. Step 3: Cross multiply
    192,971.41x = 289,375.09 × 79,040.67
  4. Step 4: Simplify right side
    192,971.41x = 22,872,399,152.83
  5. Step 5: Solve for x
    x = 22,872,399,152.83/192,971.41
  6. Step 6: Final answer
    x = 118,527.40

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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.