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Finding the Fourth Proportional to 129,760.41, 179,069.06 and 73,171.41

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Solution

The fourth proportional to 129,760.41, 179,069.06 and 73,171.41 is: 100,976.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.41 : 179,069.06 = 73,171.41 : x
  2. Step 2: Convert to fraction form
    129,760.41/179,069.06 = 73,171.41/x
  3. Step 3: Cross multiply
    129,760.41x = 179,069.06 × 73,171.41
  4. Step 4: Simplify right side
    129,760.41x = 13,102,735,241.72
  5. Step 5: Solve for x
    x = 13,102,735,241.72/129,760.41
  6. Step 6: Final answer
    x = 100,976.37

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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.