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Finding the Fourth Proportional to 117,540, 162,274.42 and 71,616.98

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Solution

The fourth proportional to 117,540, 162,274.42 and 71,616.98 is: 98,873.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,540 : 162,274.42 = 71,616.98 : x
  2. Step 2: Convert to fraction form
    117,540/162,274.42 = 71,616.98/x
  3. Step 3: Cross multiply
    117,540x = 162,274.42 × 71,616.98
  4. Step 4: Simplify right side
    117,540x = 11,621,603,891.65
  5. Step 5: Solve for x
    x = 11,621,603,891.65/117,540
  6. Step 6: Final answer
    x = 98,873.61

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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.