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Finding the Fourth Proportional to 129,701.60, 194,408.40 and 50,789.60

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Solution

The fourth proportional to 129,701.60, 194,408.40 and 50,789.60 is: 76,128.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.60 : 194,408.40 = 50,789.60 : x
  2. Step 2: Convert to fraction form
    129,701.60/194,408.40 = 50,789.60/x
  3. Step 3: Cross multiply
    129,701.60x = 194,408.40 × 50,789.60
  4. Step 4: Simplify right side
    129,701.60x = 9,873,924,872.64
  5. Step 5: Solve for x
    x = 9,873,924,872.64/129,701.60
  6. Step 6: Final answer
    x = 76,128.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.