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Finding the Fourth Proportional to 143,989.01, 215,982.59 and 49,173.44

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Solution

The fourth proportional to 143,989.01, 215,982.59 and 49,173.44 is: 73,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,989.01 : 215,982.59 = 49,173.44 : x
  2. Step 2: Convert to fraction form
    143,989.01/215,982.59 = 49,173.44/x
  3. Step 3: Cross multiply
    143,989.01x = 215,982.59 × 49,173.44
  4. Step 4: Simplify right side
    143,989.01x = 10,620,606,930.41
  5. Step 5: Solve for x
    x = 10,620,606,930.41/143,989.01
  6. Step 6: Final answer
    x = 73,759.85

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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.