Home / 204,640.96-307,003.20-86,312.08

Finding the Fourth Proportional to 204,640.96, 307,003.20 and 86,312.08

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Solution

The fourth proportional to 204,640.96, 307,003.20 and 86,312.08 is: 129,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,640.96 : 307,003.20 = 86,312.08 : x
  2. Step 2: Convert to fraction form
    204,640.96/307,003.20 = 86,312.08/x
  3. Step 3: Cross multiply
    204,640.96x = 307,003.20 × 86,312.08
  4. Step 4: Simplify right side
    204,640.96x = 26,498,084,758.66
  5. Step 5: Solve for x
    x = 26,498,084,758.66/204,640.96
  6. Step 6: Final answer
    x = 129,485.73

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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.