Home / 212,824.20-319,074.30-107,718.60

Finding the Fourth Proportional to 212,824.20, 319,074.30 and 107,718.60

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Solution

The fourth proportional to 212,824.20, 319,074.30 and 107,718.60 is: 161,495.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,824.20 : 319,074.30 = 107,718.60 : x
  2. Step 2: Convert to fraction form
    212,824.20/319,074.30 = 107,718.60/x
  3. Step 3: Cross multiply
    212,824.20x = 319,074.30 × 107,718.60
  4. Step 4: Simplify right side
    212,824.20x = 34,370,236,891.98
  5. Step 5: Solve for x
    x = 34,370,236,891.98/212,824.20
  6. Step 6: Final answer
    x = 161,495.91

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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.