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Finding the Fourth Proportional to 117,706.50, 162,432 and 63,990.27

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Solution

The fourth proportional to 117,706.50, 162,432 and 63,990.27 is: 88,304.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,706.50 : 162,432 = 63,990.27 : x
  2. Step 2: Convert to fraction form
    117,706.50/162,432 = 63,990.27/x
  3. Step 3: Cross multiply
    117,706.50x = 162,432 × 63,990.27
  4. Step 4: Simplify right side
    117,706.50x = 10,394,067,536.64
  5. Step 5: Solve for x
    x = 10,394,067,536.64/117,706.50
  6. Step 6: Final answer
    x = 88,304.96

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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.