Home / 140,821.15-194,340.97-80,411.20

Finding the Fourth Proportional to 140,821.15, 194,340.97 and 80,411.20

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Solution

The fourth proportional to 140,821.15, 194,340.97 and 80,411.20 is: 110,971.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,821.15 : 194,340.97 = 80,411.20 : x
  2. Step 2: Convert to fraction form
    140,821.15/194,340.97 = 80,411.20/x
  3. Step 3: Cross multiply
    140,821.15x = 194,340.97 × 80,411.20
  4. Step 4: Simplify right side
    140,821.15x = 15,627,189,404.82
  5. Step 5: Solve for x
    x = 15,627,189,404.82/140,821.15
  6. Step 6: Final answer
    x = 110,971.89

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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.