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Finding the Fourth Proportional to 218,156.20, 327,137.10 and 99,863.80

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Solution

The fourth proportional to 218,156.20, 327,137.10 and 99,863.80 is: 149,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,156.20 : 327,137.10 = 99,863.80 : x
  2. Step 2: Convert to fraction form
    218,156.20/327,137.10 = 99,863.80/x
  3. Step 3: Cross multiply
    218,156.20x = 327,137.10 × 99,863.80
  4. Step 4: Simplify right side
    218,156.20x = 32,669,153,926.98
  5. Step 5: Solve for x
    x = 32,669,153,926.98/218,156.20
  6. Step 6: Final answer
    x = 149,751.21

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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.