Home / 131,231,326.60-196,846,989.90-80,212,990.60

Finding the Fourth Proportional to 131,231,326.60, 196,846,989.90 and 80,212,990.60

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Solution

The fourth proportional to 131,231,326.60, 196,846,989.90 and 80,212,990.60 is: 120,319,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,231,326.60 : 196,846,989.90 = 80,212,990.60 : x
  2. Step 2: Convert to fraction form
    131,231,326.60/196,846,989.90 = 80,212,990.60/x
  3. Step 3: Cross multiply
    131,231,326.60x = 196,846,989.90 × 80,212,990.60
  4. Step 4: Simplify right side
    131,231,326.60x = 15,789,685,750,486,994
  5. Step 5: Solve for x
    x = 15,789,685,750,486,994/131,231,326.60
  6. Step 6: Final answer
    x = 120,319,485.90

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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.