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Finding the Fourth Proportional to 140,388.36, 193,770.36 and 79,994.61

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Solution

The fourth proportional to 140,388.36, 193,770.36 and 79,994.61 is: 110,412.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,388.36 : 193,770.36 = 79,994.61 : x
  2. Step 2: Convert to fraction form
    140,388.36/193,770.36 = 79,994.61/x
  3. Step 3: Cross multiply
    140,388.36x = 193,770.36 × 79,994.61
  4. Step 4: Simplify right side
    140,388.36x = 15,500,584,377.76
  5. Step 5: Solve for x
    x = 15,500,584,377.76/140,388.36
  6. Step 6: Final answer
    x = 110,412.18

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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.