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Finding the Fourth Proportional to 140,500.71, 193,889.03 and 80,074.98

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Solution

The fourth proportional to 140,500.71, 193,889.03 and 80,074.98 is: 110,502.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,500.71 : 193,889.03 = 80,074.98 : x
  2. Step 2: Convert to fraction form
    140,500.71/193,889.03 = 80,074.98/x
  3. Step 3: Cross multiply
    140,500.71x = 193,889.03 × 80,074.98
  4. Step 4: Simplify right side
    140,500.71x = 15,525,659,799.09
  5. Step 5: Solve for x
    x = 15,525,659,799.09/140,500.71
  6. Step 6: Final answer
    x = 110,502.36

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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.