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Finding the Fourth Proportional to 136,426.60, 204,639.90 and 69,844.60

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Solution

The fourth proportional to 136,426.60, 204,639.90 and 69,844.60 is: 104,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,426.60 : 204,639.90 = 69,844.60 : x
  2. Step 2: Convert to fraction form
    136,426.60/204,639.90 = 69,844.60/x
  3. Step 3: Cross multiply
    136,426.60x = 204,639.90 × 69,844.60
  4. Step 4: Simplify right side
    136,426.60x = 14,292,991,959.54
  5. Step 5: Solve for x
    x = 14,292,991,959.54/136,426.60
  6. Step 6: Final answer
    x = 104,766.90

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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.