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Finding the Fourth Proportional to 131,568.86, 197,016.98 and 72,339.42

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Solution

The fourth proportional to 131,568.86, 197,016.98 and 72,339.42 is: 108,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,568.86 : 197,016.98 = 72,339.42 : x
  2. Step 2: Convert to fraction form
    131,568.86/197,016.98 = 72,339.42/x
  3. Step 3: Cross multiply
    131,568.86x = 197,016.98 × 72,339.42
  4. Step 4: Simplify right side
    131,568.86x = 14,252,093,701.65
  5. Step 5: Solve for x
    x = 14,252,093,701.65/131,568.86
  6. Step 6: Final answer
    x = 108,324.22

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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.