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Finding the Fourth Proportional to 139,951.68, 193,126.34 and 79,514.34

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Solution

The fourth proportional to 139,951.68, 193,126.34 and 79,514.34 is: 109,725.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,951.68 : 193,126.34 = 79,514.34 : x
  2. Step 2: Convert to fraction form
    139,951.68/193,126.34 = 79,514.34/x
  3. Step 3: Cross multiply
    139,951.68x = 193,126.34 × 79,514.34
  4. Step 4: Simplify right side
    139,951.68x = 15,356,313,064.14
  5. Step 5: Solve for x
    x = 15,356,313,064.14/139,951.68
  6. Step 6: Final answer
    x = 109,725.82

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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.