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Finding the Fourth Proportional to 146,340, 201,949.26 and 79,272

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Solution

The fourth proportional to 146,340, 201,949.26 and 79,272 is: 109,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,340 : 201,949.26 = 79,272 : x
  2. Step 2: Convert to fraction form
    146,340/201,949.26 = 79,272/x
  3. Step 3: Cross multiply
    146,340x = 201,949.26 × 79,272
  4. Step 4: Simplify right side
    146,340x = 16,008,921,738.72
  5. Step 5: Solve for x
    x = 16,008,921,738.72/146,340
  6. Step 6: Final answer
    x = 109,395.39

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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.