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Finding the Fourth Proportional to 140,551.68, 193,969.92 and 80,954.88

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Solution

The fourth proportional to 140,551.68, 193,969.92 and 80,954.88 is: 111,722.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,551.68 : 193,969.92 = 80,954.88 : x
  2. Step 2: Convert to fraction form
    140,551.68/193,969.92 = 80,954.88/x
  3. Step 3: Cross multiply
    140,551.68x = 193,969.92 × 80,954.88
  4. Step 4: Simplify right side
    140,551.68x = 15,702,811,597.21
  5. Step 5: Solve for x
    x = 15,702,811,597.21/140,551.68
  6. Step 6: Final answer
    x = 111,722.69

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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.