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Finding the Fourth Proportional to 146,131, 201,660.78 and 79,063

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Solution

The fourth proportional to 146,131, 201,660.78 and 79,063 is: 109,106.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,131 : 201,660.78 = 79,063 : x
  2. Step 2: Convert to fraction form
    146,131/201,660.78 = 79,063/x
  3. Step 3: Cross multiply
    146,131x = 201,660.78 × 79,063
  4. Step 4: Simplify right side
    146,131x = 15,943,906,249.14
  5. Step 5: Solve for x
    x = 15,943,906,249.14/146,131
  6. Step 6: Final answer
    x = 109,106.94

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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.