Home / 135,499.30-187,020.09-90,179.19

Finding the Fourth Proportional to 135,499.30, 187,020.09 and 90,179.19

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Solution

The fourth proportional to 135,499.30, 187,020.09 and 90,179.19 is: 124,467.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,499.30 : 187,020.09 = 90,179.19 : x
  2. Step 2: Convert to fraction form
    135,499.30/187,020.09 = 90,179.19/x
  3. Step 3: Cross multiply
    135,499.30x = 187,020.09 × 90,179.19
  4. Step 4: Simplify right side
    135,499.30x = 16,865,320,229.93
  5. Step 5: Solve for x
    x = 16,865,320,229.93/135,499.30
  6. Step 6: Final answer
    x = 124,467.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.