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Finding the Fourth Proportional to 159,539.60, 220,243.38 and 108,815.78

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Solution

The fourth proportional to 159,539.60, 220,243.38 and 108,815.78 is: 150,219.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,539.60 : 220,243.38 = 108,815.78 : x
  2. Step 2: Convert to fraction form
    159,539.60/220,243.38 = 108,815.78/x
  3. Step 3: Cross multiply
    159,539.60x = 220,243.38 × 108,815.78
  4. Step 4: Simplify right side
    159,539.60x = 23,965,955,184.54
  5. Step 5: Solve for x
    x = 23,965,955,184.54/159,539.60
  6. Step 6: Final answer
    x = 150,219.48

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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.