Home / 212,904.19-319,183.08-79,709.83

Finding the Fourth Proportional to 212,904.19, 319,183.08 and 79,709.83

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Solution

The fourth proportional to 212,904.19, 319,183.08 and 79,709.83 is: 119,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,904.19 : 319,183.08 = 79,709.83 : x
  2. Step 2: Convert to fraction form
    212,904.19/319,183.08 = 79,709.83/x
  3. Step 3: Cross multiply
    212,904.19x = 319,183.08 × 79,709.83
  4. Step 4: Simplify right side
    212,904.19x = 25,442,029,045.68
  5. Step 5: Solve for x
    x = 25,442,029,045.68/212,904.19
  6. Step 6: Final answer
    x = 119,499.90

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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.