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Finding the Fourth Proportional to 117,806.32, 162,558.12 and 79,648.96

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Solution

The fourth proportional to 117,806.32, 162,558.12 and 79,648.96 is: 109,905.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,806.32 : 162,558.12 = 79,648.96 : x
  2. Step 2: Convert to fraction form
    117,806.32/162,558.12 = 79,648.96/x
  3. Step 3: Cross multiply
    117,806.32x = 162,558.12 × 79,648.96
  4. Step 4: Simplify right side
    117,806.32x = 12,947,585,197.56
  5. Step 5: Solve for x
    x = 12,947,585,197.56/117,806.32
  6. Step 6: Final answer
    x = 109,905.69

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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.