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Finding the Fourth Proportional to 133,063.21, 199,635.72 and 79,814.26

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Solution

The fourth proportional to 133,063.21, 199,635.72 and 79,814.26 is: 119,745.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,063.21 : 199,635.72 = 79,814.26 : x
  2. Step 2: Convert to fraction form
    133,063.21/199,635.72 = 79,814.26/x
  3. Step 3: Cross multiply
    133,063.21x = 199,635.72 × 79,814.26
  4. Step 4: Simplify right side
    133,063.21x = 15,933,777,261.37
  5. Step 5: Solve for x
    x = 15,933,777,261.37/133,063.21
  6. Step 6: Final answer
    x = 119,745.93

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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.