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Finding the Fourth Proportional to 159,872.40, 239,808.60 and 112,179.60

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Solution

The fourth proportional to 159,872.40, 239,808.60 and 112,179.60 is: 168,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,872.40 : 239,808.60 = 112,179.60 : x
  2. Step 2: Convert to fraction form
    159,872.40/239,808.60 = 112,179.60/x
  3. Step 3: Cross multiply
    159,872.40x = 239,808.60 × 112,179.60
  4. Step 4: Simplify right side
    159,872.40x = 26,901,632,824.56
  5. Step 5: Solve for x
    x = 26,901,632,824.56/159,872.40
  6. Step 6: Final answer
    x = 168,269.40

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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.