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Finding the Fourth Proportional to 140,998.20, 211,446.10 and 70,854.20

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Solution

The fourth proportional to 140,998.20, 211,446.10 and 70,854.20 is: 106,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,998.20 : 211,446.10 = 70,854.20 : x
  2. Step 2: Convert to fraction form
    140,998.20/211,446.10 = 70,854.20/x
  3. Step 3: Cross multiply
    140,998.20x = 211,446.10 × 70,854.20
  4. Step 4: Simplify right side
    140,998.20x = 14,981,844,258.62
  5. Step 5: Solve for x
    x = 14,981,844,258.62/140,998.20
  6. Step 6: Final answer
    x = 106,255.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.