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Finding the Fourth Proportional to 133,089.90, 199,536.44 and 80,487.70

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Solution

The fourth proportional to 133,089.90, 199,536.44 and 80,487.70 is: 120,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,089.90 : 199,536.44 = 80,487.70 : x
  2. Step 2: Convert to fraction form
    133,089.90/199,536.44 = 80,487.70/x
  3. Step 3: Cross multiply
    133,089.90x = 199,536.44 × 80,487.70
  4. Step 4: Simplify right side
    133,089.90x = 16,060,229,121.79
  5. Step 5: Solve for x
    x = 16,060,229,121.79/133,089.90
  6. Step 6: Final answer
    x = 120,672.04

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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.