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Finding the Fourth Proportional to 135,860.64, 203,791.64 and 79,661.22

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Solution

The fourth proportional to 135,860.64, 203,791.64 and 79,661.22 is: 119,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,860.64 : 203,791.64 = 79,661.22 : x
  2. Step 2: Convert to fraction form
    135,860.64/203,791.64 = 79,661.22/x
  3. Step 3: Cross multiply
    135,860.64x = 203,791.64 × 79,661.22
  4. Step 4: Simplify right side
    135,860.64x = 16,234,290,269.89
  5. Step 5: Solve for x
    x = 16,234,290,269.89/135,860.64
  6. Step 6: Final answer
    x = 119,492.23

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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.