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Finding the Fourth Proportional to 230,912.48, 346,388.36 and 81,139.83

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Solution

The fourth proportional to 230,912.48, 346,388.36 and 81,139.83 is: 121,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,912.48 : 346,388.36 = 81,139.83 : x
  2. Step 2: Convert to fraction form
    230,912.48/346,388.36 = 81,139.83/x
  3. Step 3: Cross multiply
    230,912.48x = 346,388.36 × 81,139.83
  4. Step 4: Simplify right side
    230,912.48x = 28,105,892,238.68
  5. Step 5: Solve for x
    x = 28,105,892,238.68/230,912.48
  6. Step 6: Final answer
    x = 121,716.65

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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.