Home / 123,581.40-185,205.24-90,144.60

Finding the Fourth Proportional to 123,581.40, 185,205.24 and 90,144.60

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Solution

The fourth proportional to 123,581.40, 185,205.24 and 90,144.60 is: 135,095.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,581.40 : 185,205.24 = 90,144.60 : x
  2. Step 2: Convert to fraction form
    123,581.40/185,205.24 = 90,144.60/x
  3. Step 3: Cross multiply
    123,581.40x = 185,205.24 × 90,144.60
  4. Step 4: Simplify right side
    123,581.40x = 16,695,252,277.70
  5. Step 5: Solve for x
    x = 16,695,252,277.70/123,581.40
  6. Step 6: Final answer
    x = 135,095.19

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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.