Home / 154,543,800.80-231,815,701.20-138,419,487.20

Finding the Fourth Proportional to 154,543,800.80, 231,815,701.20 and 138,419,487.20

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Solution

The fourth proportional to 154,543,800.80, 231,815,701.20 and 138,419,487.20 is: 207,629,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,543,800.80 : 231,815,701.20 = 138,419,487.20 : x
  2. Step 2: Convert to fraction form
    154,543,800.80/231,815,701.20 = 138,419,487.20/x
  3. Step 3: Cross multiply
    154,543,800.80x = 231,815,701.20 × 138,419,487.20
  4. Step 4: Simplify right side
    154,543,800.80x = 32,087,810,485,012,420
  5. Step 5: Solve for x
    x = 32,087,810,485,012,420/154,543,800.80
  6. Step 6: Final answer
    x = 207,629,230.80

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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.