Home / 68,777,321.80-103,165,982.70-66,131,926.60

Finding the Fourth Proportional to 68,777,321.80, 103,165,982.70 and 66,131,926.60

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Solution

The fourth proportional to 68,777,321.80, 103,165,982.70 and 66,131,926.60 is: 99,197,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,777,321.80 : 103,165,982.70 = 66,131,926.60 : x
  2. Step 2: Convert to fraction form
    68,777,321.80/103,165,982.70 = 66,131,926.60/x
  3. Step 3: Cross multiply
    68,777,321.80x = 103,165,982.70 × 66,131,926.60
  4. Step 4: Simplify right side
    68,777,321.80x = 6,822,565,195,533,270
  5. Step 5: Solve for x
    x = 6,822,565,195,533,270/68,777,321.80
  6. Step 6: Final answer
    x = 99,197,889.90

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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.