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Finding the Fourth Proportional to 230,879.12, 346,353.30 and 81,093

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Solution

The fourth proportional to 230,879.12, 346,353.30 and 81,093 is: 121,651.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,879.12 : 346,353.30 = 81,093 : x
  2. Step 2: Convert to fraction form
    230,879.12/346,353.30 = 81,093/x
  3. Step 3: Cross multiply
    230,879.12x = 346,353.30 × 81,093
  4. Step 4: Simplify right side
    230,879.12x = 28,086,828,156.90
  5. Step 5: Solve for x
    x = 28,086,828,156.90/230,879.12
  6. Step 6: Final answer
    x = 121,651.66

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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.