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Finding the Fourth Proportional to 140,561.60, 193,979.60 and 80,131.12

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Solution

The fourth proportional to 140,561.60, 193,979.60 and 80,131.12 is: 110,583.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,561.60 : 193,979.60 = 80,131.12 : x
  2. Step 2: Convert to fraction form
    140,561.60/193,979.60 = 80,131.12/x
  3. Step 3: Cross multiply
    140,561.60x = 193,979.60 × 80,131.12
  4. Step 4: Simplify right side
    140,561.60x = 15,543,802,605.15
  5. Step 5: Solve for x
    x = 15,543,802,605.15/140,561.60
  6. Step 6: Final answer
    x = 110,583.56

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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.