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Finding the Fourth Proportional to 140,613.60, 194,050.12 and 80,190.02

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Solution

The fourth proportional to 140,613.60, 194,050.12 and 80,190.02 is: 110,664.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,613.60 : 194,050.12 = 80,190.02 : x
  2. Step 2: Convert to fraction form
    140,613.60/194,050.12 = 80,190.02/x
  3. Step 3: Cross multiply
    140,613.60x = 194,050.12 × 80,190.02
  4. Step 4: Simplify right side
    140,613.60x = 15,560,883,003.80
  5. Step 5: Solve for x
    x = 15,560,883,003.80/140,613.60
  6. Step 6: Final answer
    x = 110,664.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.