Home / 212,724.70-319,065.45-72,481.30

Finding the Fourth Proportional to 212,724.70, 319,065.45 and 72,481.30

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Solution

The fourth proportional to 212,724.70, 319,065.45 and 72,481.30 is: 108,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,724.70 : 319,065.45 = 72,481.30 : x
  2. Step 2: Convert to fraction form
    212,724.70/319,065.45 = 72,481.30/x
  3. Step 3: Cross multiply
    212,724.70x = 319,065.45 × 72,481.30
  4. Step 4: Simplify right side
    212,724.70x = 23,126,278,601.09
  5. Step 5: Solve for x
    x = 23,126,278,601.09/212,724.70
  6. Step 6: Final answer
    x = 108,714.59

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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.