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Finding the Fourth Proportional to 100,286.60, 140,138.80 and 100,286.60

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Solution

The fourth proportional to 100,286.60, 140,138.80 and 100,286.60 is: 140,138.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,286.60 : 140,138.80 = 100,286.60 : x
  2. Step 2: Convert to fraction form
    100,286.60/140,138.80 = 100,286.60/x
  3. Step 3: Cross multiply
    100,286.60x = 140,138.80 × 100,286.60
  4. Step 4: Simplify right side
    100,286.60x = 14,054,043,780.08
  5. Step 5: Solve for x
    x = 14,054,043,780.08/100,286.60
  6. Step 6: Final answer
    x = 140,138.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.