Home / 212,826.92-319,439.66-107,719.70

Finding the Fourth Proportional to 212,826.92, 319,439.66 and 107,719.70

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Solution

The fourth proportional to 212,826.92, 319,439.66 and 107,719.70 is: 161,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,826.92 : 319,439.66 = 107,719.70 : x
  2. Step 2: Convert to fraction form
    212,826.92/319,439.66 = 107,719.70/x
  3. Step 3: Cross multiply
    212,826.92x = 319,439.66 × 107,719.70
  4. Step 4: Simplify right side
    212,826.92x = 34,409,942,207.51
  5. Step 5: Solve for x
    x = 34,409,942,207.51/212,826.92
  6. Step 6: Final answer
    x = 161,680.41

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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.