Home / 159,479,620.80-239,219,431.20-78,858,052.80

Finding the Fourth Proportional to 159,479,620.80, 239,219,431.20 and 78,858,052.80

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Solution

The fourth proportional to 159,479,620.80, 239,219,431.20 and 78,858,052.80 is: 118,287,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479,620.80 : 239,219,431.20 = 78,858,052.80 : x
  2. Step 2: Convert to fraction form
    159,479,620.80/239,219,431.20 = 78,858,052.80/x
  3. Step 3: Cross multiply
    159,479,620.80x = 239,219,431.20 × 78,858,052.80
  4. Step 4: Simplify right side
    159,479,620.80x = 18,864,378,536,355,564
  5. Step 5: Solve for x
    x = 18,864,378,536,355,564/159,479,620.80
  6. Step 6: Final answer
    x = 118,287,079.20

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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.