Home / 123,723.20-185,296.08-90,360.68

Finding the Fourth Proportional to 123,723.20, 185,296.08 and 90,360.68

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Solution

The fourth proportional to 123,723.20, 185,296.08 and 90,360.68 is: 135,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,723.20 : 185,296.08 = 90,360.68 : x
  2. Step 2: Convert to fraction form
    123,723.20/185,296.08 = 90,360.68/x
  3. Step 3: Cross multiply
    123,723.20x = 185,296.08 × 90,360.68
  4. Step 4: Simplify right side
    123,723.20x = 16,743,479,790.13
  5. Step 5: Solve for x
    x = 16,743,479,790.13/123,723.20
  6. Step 6: Final answer
    x = 135,330.15

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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.