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Finding the Fourth Proportional to 159,786.76, 220,506.90 and 88,169.44

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Solution

The fourth proportional to 159,786.76, 220,506.90 and 88,169.44 is: 121,674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,786.76 : 220,506.90 = 88,169.44 : x
  2. Step 2: Convert to fraction form
    159,786.76/220,506.90 = 88,169.44/x
  3. Step 3: Cross multiply
    159,786.76x = 220,506.90 × 88,169.44
  4. Step 4: Simplify right side
    159,786.76x = 19,441,969,889.14
  5. Step 5: Solve for x
    x = 19,441,969,889.14/159,786.76
  6. Step 6: Final answer
    x = 121,674.47

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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.