Home / 140,910.10-211,552.80-81,788.20

Finding the Fourth Proportional to 140,910.10, 211,552.80 and 81,788.20

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Solution

The fourth proportional to 140,910.10, 211,552.80 and 81,788.20 is: 122,791.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,910.10 : 211,552.80 = 81,788.20 : x
  2. Step 2: Convert to fraction form
    140,910.10/211,552.80 = 81,788.20/x
  3. Step 3: Cross multiply
    140,910.10x = 211,552.80 × 81,788.20
  4. Step 4: Simplify right side
    140,910.10x = 17,302,522,716.96
  5. Step 5: Solve for x
    x = 17,302,522,716.96/140,910.10
  6. Step 6: Final answer
    x = 122,791.22

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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.