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Finding the Fourth Proportional to 133,170.57, 199,851.42 and 90,369.27

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Solution

The fourth proportional to 133,170.57, 199,851.42 and 90,369.27 is: 135,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,170.57 : 199,851.42 = 90,369.27 : x
  2. Step 2: Convert to fraction form
    133,170.57/199,851.42 = 90,369.27/x
  3. Step 3: Cross multiply
    133,170.57x = 199,851.42 × 90,369.27
  4. Step 4: Simplify right side
    133,170.57x = 18,060,426,933.86
  5. Step 5: Solve for x
    x = 18,060,426,933.86/133,170.57
  6. Step 6: Final answer
    x = 135,618.76

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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.