Home / 131,514.42-197,321.31-78,960.54

Finding the Fourth Proportional to 131,514.42, 197,321.31 and 78,960.54

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Solution

The fourth proportional to 131,514.42, 197,321.31 and 78,960.54 is: 118,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,514.42 : 197,321.31 = 78,960.54 : x
  2. Step 2: Convert to fraction form
    131,514.42/197,321.31 = 78,960.54/x
  3. Step 3: Cross multiply
    131,514.42x = 197,321.31 × 78,960.54
  4. Step 4: Simplify right side
    131,514.42x = 15,580,597,191.11
  5. Step 5: Solve for x
    x = 15,580,597,191.11/131,514.42
  6. Step 6: Final answer
    x = 118,470.64

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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.