Home / 131,940.64-197,960.78-79,387.03

Finding the Fourth Proportional to 131,940.64, 197,960.78 and 79,387.03

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Solution

The fourth proportional to 131,940.64, 197,960.78 and 79,387.03 is: 119,110.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,940.64 : 197,960.78 = 79,387.03 : x
  2. Step 2: Convert to fraction form
    131,940.64/197,960.78 = 79,387.03/x
  3. Step 3: Cross multiply
    131,940.64x = 197,960.78 × 79,387.03
  4. Step 4: Simplify right side
    131,940.64x = 15,715,518,380.68
  5. Step 5: Solve for x
    x = 15,715,518,380.68/131,940.64
  6. Step 6: Final answer
    x = 119,110.52

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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.