Home / 131,431.20-196,855.20-108,103.20

Finding the Fourth Proportional to 131,431.20, 196,855.20 and 108,103.20

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Solution

The fourth proportional to 131,431.20, 196,855.20 and 108,103.20 is: 161,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,431.20 : 196,855.20 = 108,103.20 : x
  2. Step 2: Convert to fraction form
    131,431.20/196,855.20 = 108,103.20/x
  3. Step 3: Cross multiply
    131,431.20x = 196,855.20 × 108,103.20
  4. Step 4: Simplify right side
    131,431.20x = 21,280,677,056.64
  5. Step 5: Solve for x
    x = 21,280,677,056.64/131,431.20
  6. Step 6: Final answer
    x = 161,914.96

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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.