Home / 128,325,813.60-192,465,100.80-79,716,676.80

Finding the Fourth Proportional to 128,325,813.60, 192,465,100.80 and 79,716,676.80

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Solution

The fourth proportional to 128,325,813.60, 192,465,100.80 and 79,716,676.80 is: 119,560,342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325,813.60 : 192,465,100.80 = 79,716,676.80 : x
  2. Step 2: Convert to fraction form
    128,325,813.60/192,465,100.80 = 79,716,676.80/x
  3. Step 3: Cross multiply
    128,325,813.60x = 192,465,100.80 × 79,716,676.80
  4. Step 4: Simplify right side
    128,325,813.60x = 15,342,678,235,753,022
  5. Step 5: Solve for x
    x = 15,342,678,235,753,022/128,325,813.60
  6. Step 6: Final answer
    x = 119,560,342.58

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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.