Home / 205,025.80-307,668.30-120,785.80

Finding the Fourth Proportional to 205,025.80, 307,668.30 and 120,785.80

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Solution

The fourth proportional to 205,025.80, 307,668.30 and 120,785.80 is: 181,255.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,025.80 : 307,668.30 = 120,785.80 : x
  2. Step 2: Convert to fraction form
    205,025.80/307,668.30 = 120,785.80/x
  3. Step 3: Cross multiply
    205,025.80x = 307,668.30 × 120,785.80
  4. Step 4: Simplify right side
    205,025.80x = 37,161,961,750.14
  5. Step 5: Solve for x
    x = 37,161,961,750.14/205,025.80
  6. Step 6: Final answer
    x = 181,255.05

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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.