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Finding the Fourth Proportional to 142,706.50, 196,934.97 and 79,048.41

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Solution

The fourth proportional to 142,706.50, 196,934.97 and 79,048.41 is: 109,086.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,706.50 : 196,934.97 = 79,048.41 : x
  2. Step 2: Convert to fraction form
    142,706.50/196,934.97 = 79,048.41/x
  3. Step 3: Cross multiply
    142,706.50x = 196,934.97 × 79,048.41
  4. Step 4: Simplify right side
    142,706.50x = 15,567,396,251.90
  5. Step 5: Solve for x
    x = 15,567,396,251.90/142,706.50
  6. Step 6: Final answer
    x = 109,086.81

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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.