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Finding the Fourth Proportional to 117,869.64, 162,763.86 and 80,233.80

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Solution

The fourth proportional to 117,869.64, 162,763.86 and 80,233.80 is: 110,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,869.64 : 162,763.86 = 80,233.80 : x
  2. Step 2: Convert to fraction form
    117,869.64/162,763.86 = 80,233.80/x
  3. Step 3: Cross multiply
    117,869.64x = 162,763.86 × 80,233.80
  4. Step 4: Simplify right side
    117,869.64x = 13,059,162,990.47
  5. Step 5: Solve for x
    x = 13,059,162,990.47/117,869.64
  6. Step 6: Final answer
    x = 110,793.27

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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.