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Finding the Fourth Proportional to 159,711.60, 239,365.80 and 80,847.60

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Solution

The fourth proportional to 159,711.60, 239,365.80 and 80,847.60 is: 121,169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,711.60 : 239,365.80 = 80,847.60 : x
  2. Step 2: Convert to fraction form
    159,711.60/239,365.80 = 80,847.60/x
  3. Step 3: Cross multiply
    159,711.60x = 239,365.80 × 80,847.60
  4. Step 4: Simplify right side
    159,711.60x = 19,352,150,452.08
  5. Step 5: Solve for x
    x = 19,352,150,452.08/159,711.60
  6. Step 6: Final answer
    x = 121,169.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.