Home / 212,822.20-319,071.30-107,716.60

Finding the Fourth Proportional to 212,822.20, 319,071.30 and 107,716.60

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Solution

The fourth proportional to 212,822.20, 319,071.30 and 107,716.60 is: 161,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,822.20 : 319,071.30 = 107,716.60 : x
  2. Step 2: Convert to fraction form
    212,822.20/319,071.30 = 107,716.60/x
  3. Step 3: Cross multiply
    212,822.20x = 319,071.30 × 107,716.60
  4. Step 4: Simplify right side
    212,822.20x = 34,369,275,593.58
  5. Step 5: Solve for x
    x = 34,369,275,593.58/212,822.20
  6. Step 6: Final answer
    x = 161,492.91

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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.