Home / 131,891.70-197,837.55-81,153.30

Finding the Fourth Proportional to 131,891.70, 197,837.55 and 81,153.30

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Solution

The fourth proportional to 131,891.70, 197,837.55 and 81,153.30 is: 121,729.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,891.70 : 197,837.55 = 81,153.30 : x
  2. Step 2: Convert to fraction form
    131,891.70/197,837.55 = 81,153.30/x
  3. Step 3: Cross multiply
    131,891.70x = 197,837.55 × 81,153.30
  4. Step 4: Simplify right side
    131,891.70x = 16,055,170,046.42
  5. Step 5: Solve for x
    x = 16,055,170,046.42/131,891.70
  6. Step 6: Final answer
    x = 121,729.95

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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.