Home / 80,777,475.20-121,166,212.80-68,022,891.20

Finding the Fourth Proportional to 80,777,475.20, 121,166,212.80 and 68,022,891.20

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Solution

The fourth proportional to 80,777,475.20, 121,166,212.80 and 68,022,891.20 is: 102,034,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,777,475.20 : 121,166,212.80 = 68,022,891.20 : x
  2. Step 2: Convert to fraction form
    80,777,475.20/121,166,212.80 = 68,022,891.20/x
  3. Step 3: Cross multiply
    80,777,475.20x = 121,166,212.80 × 68,022,891.20
  4. Step 4: Simplify right side
    80,777,475.20x = 8,242,076,110,410,448
  5. Step 5: Solve for x
    x = 8,242,076,110,410,448/80,777,475.20
  6. Step 6: Final answer
    x = 102,034,336.80

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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.