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Finding the Fourth Proportional to 204,959.01, 307,364.71 and 86,639.55

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Solution

The fourth proportional to 204,959.01, 307,364.71 and 86,639.55 is: 129,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,959.01 : 307,364.71 = 86,639.55 : x
  2. Step 2: Convert to fraction form
    204,959.01/307,364.71 = 86,639.55/x
  3. Step 3: Cross multiply
    204,959.01x = 307,364.71 × 86,639.55
  4. Step 4: Simplify right side
    204,959.01x = 26,629,940,160.28
  5. Step 5: Solve for x
    x = 26,629,940,160.28/204,959.01
  6. Step 6: Final answer
    x = 129,928.13

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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.