Home / 204,945.20-307,417.80-120,618.80

Finding the Fourth Proportional to 204,945.20, 307,417.80 and 120,618.80

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Solution

The fourth proportional to 204,945.20, 307,417.80 and 120,618.80 is: 180,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,945.20 : 307,417.80 = 120,618.80 : x
  2. Step 2: Convert to fraction form
    204,945.20/307,417.80 = 120,618.80/x
  3. Step 3: Cross multiply
    204,945.20x = 307,417.80 × 120,618.80
  4. Step 4: Simplify right side
    204,945.20x = 37,080,366,134.64
  5. Step 5: Solve for x
    x = 37,080,366,134.64/204,945.20
  6. Step 6: Final answer
    x = 180,928.20

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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.