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Finding the Fourth Proportional to 139,224.88, 209,865.67 and 131,096.80

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Solution

The fourth proportional to 139,224.88, 209,865.67 and 131,096.80 is: 197,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,224.88 : 209,865.67 = 131,096.80 : x
  2. Step 2: Convert to fraction form
    139,224.88/209,865.67 = 131,096.80/x
  3. Step 3: Cross multiply
    139,224.88x = 209,865.67 × 131,096.80
  4. Step 4: Simplify right side
    139,224.88x = 27,512,717,766.86
  5. Step 5: Solve for x
    x = 27,512,717,766.86/139,224.88
  6. Step 6: Final answer
    x = 197,613.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.