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Finding the Fourth Proportional to 140,200.39, 193,469.79 and 79,765.39

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Solution

The fourth proportional to 140,200.39, 193,469.79 and 79,765.39 is: 110,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,200.39 : 193,469.79 = 79,765.39 : x
  2. Step 2: Convert to fraction form
    140,200.39/193,469.79 = 79,765.39/x
  3. Step 3: Cross multiply
    140,200.39x = 193,469.79 × 79,765.39
  4. Step 4: Simplify right side
    140,200.39x = 15,432,193,252.57
  5. Step 5: Solve for x
    x = 15,432,193,252.57/140,200.39
  6. Step 6: Final answer
    x = 110,072.40

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1.5x scale

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.