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Finding the Fourth Proportional to 195,195.50, 269,369.79 and 105,771.50

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Solution

The fourth proportional to 195,195.50, 269,369.79 and 105,771.50 is: 145,964.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,195.50 : 269,369.79 = 105,771.50 : x
  2. Step 2: Convert to fraction form
    195,195.50/269,369.79 = 105,771.50/x
  3. Step 3: Cross multiply
    195,195.50x = 269,369.79 × 105,771.50
  4. Step 4: Simplify right side
    195,195.50x = 28,491,646,742.99
  5. Step 5: Solve for x
    x = 28,491,646,742.99/195,195.50
  6. Step 6: Final answer
    x = 145,964.67

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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.