Home / 81,431,198.40-122,146,797.60-68,676,614.40

Finding the Fourth Proportional to 81,431,198.40, 122,146,797.60 and 68,676,614.40

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Solution

The fourth proportional to 81,431,198.40, 122,146,797.60 and 68,676,614.40 is: 103,014,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431,198.40 : 122,146,797.60 = 68,676,614.40 : x
  2. Step 2: Convert to fraction form
    81,431,198.40/122,146,797.60 = 68,676,614.40/x
  3. Step 3: Cross multiply
    81,431,198.40x = 122,146,797.60 × 68,676,614.40
  4. Step 4: Simplify right side
    81,431,198.40x = 8,388,628,518,970,046
  5. Step 5: Solve for x
    x = 8,388,628,518,970,046/81,431,198.40
  6. Step 6: Final answer
    x = 103,014,921.60

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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.