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Finding the Fourth Proportional to 167,872.40, 251,808.60 and 129,818.60

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Solution

The fourth proportional to 167,872.40, 251,808.60 and 129,818.60 is: 194,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,872.40 : 251,808.60 = 129,818.60 : x
  2. Step 2: Convert to fraction form
    167,872.40/251,808.60 = 129,818.60/x
  3. Step 3: Cross multiply
    167,872.40x = 251,808.60 × 129,818.60
  4. Step 4: Simplify right side
    167,872.40x = 32,689,439,919.96
  5. Step 5: Solve for x
    x = 32,689,439,919.96/167,872.40
  6. Step 6: Final answer
    x = 194,727.90

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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.