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Finding the Fourth Proportional to 140,910.71, 194,452.75 and 80,480.10

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Solution

The fourth proportional to 140,910.71, 194,452.75 and 80,480.10 is: 111,060.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,910.71 : 194,452.75 = 80,480.10 : x
  2. Step 2: Convert to fraction form
    140,910.71/194,452.75 = 80,480.10/x
  3. Step 3: Cross multiply
    140,910.71x = 194,452.75 × 80,480.10
  4. Step 4: Simplify right side
    140,910.71x = 15,649,577,595.07
  5. Step 5: Solve for x
    x = 15,649,577,595.07/140,910.71
  6. Step 6: Final answer
    x = 111,060.25

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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.