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Finding the Fourth Proportional to 146,379, 202,003.17 and 79,311

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Solution

The fourth proportional to 146,379, 202,003.17 and 79,311 is: 109,449.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,379 : 202,003.17 = 79,311 : x
  2. Step 2: Convert to fraction form
    146,379/202,003.17 = 79,311/x
  3. Step 3: Cross multiply
    146,379x = 202,003.17 × 79,311
  4. Step 4: Simplify right side
    146,379x = 16,021,073,415.87
  5. Step 5: Solve for x
    x = 16,021,073,415.87/146,379
  6. Step 6: Final answer
    x = 109,449.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.