Home / 81,431,229.40-122,146,844.10-68,676,645.40

Finding the Fourth Proportional to 81,431,229.40, 122,146,844.10 and 68,676,645.40

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Solution

The fourth proportional to 81,431,229.40, 122,146,844.10 and 68,676,645.40 is: 103,014,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431,229.40 : 122,146,844.10 = 68,676,645.40 : x
  2. Step 2: Convert to fraction form
    81,431,229.40/122,146,844.10 = 68,676,645.40/x
  3. Step 3: Cross multiply
    81,431,229.40x = 122,146,844.10 × 68,676,645.40
  4. Step 4: Simplify right side
    81,431,229.40x = 8,388,635,498,984,782
  5. Step 5: Solve for x
    x = 8,388,635,498,984,782/81,431,229.40
  6. Step 6: Final answer
    x = 103,014,968.10

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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.