Home / 204,919.80-307,422.90-86,530.20

Finding the Fourth Proportional to 204,919.80, 307,422.90 and 86,530.20

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Solution

The fourth proportional to 204,919.80, 307,422.90 and 86,530.20 is: 129,813.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,919.80 : 307,422.90 = 86,530.20 : x
  2. Step 2: Convert to fraction form
    204,919.80/307,422.90 = 86,530.20/x
  3. Step 3: Cross multiply
    204,919.80x = 307,422.90 × 86,530.20
  4. Step 4: Simplify right side
    204,919.80x = 26,601,365,021.58
  5. Step 5: Solve for x
    x = 26,601,365,021.58/204,919.80
  6. Step 6: Final answer
    x = 129,813.54

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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.