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Finding the Fourth Proportional to 80,198,630,666.40, 120,297,945,999.60 and 80,198,630,666.40

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Solution

The fourth proportional to 80,198,630,666.40, 120,297,945,999.60 and 80,198,630,666.40 is: 120,297,945,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,198,630,666.40 : 120,297,945,999.60 = 80,198,630,666.40 : x
  2. Step 2: Convert to fraction form
    80,198,630,666.40/120,297,945,999.60 = 80,198,630,666.40/x
  3. Step 3: Cross multiply
    80,198,630,666.40x = 120,297,945,999.60 × 80,198,630,666.40
  4. Step 4: Simplify right side
    80,198,630,666.40x = 9,647,730,541,148,451,635,200
  5. Step 5: Solve for x
    x = 9,647,730,541,148,451,635,200/80,198,630,666.40
  6. Step 6: Final answer
    x = 120,297,945,999.60

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1.5x scale

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.