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Finding the Fourth Proportional to 136,608.39, 204,863.36 and 57,728.76

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Solution

The fourth proportional to 136,608.39, 204,863.36 and 57,728.76 is: 86,572.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,608.39 : 204,863.36 = 57,728.76 : x
  2. Step 2: Convert to fraction form
    136,608.39/204,863.36 = 57,728.76/x
  3. Step 3: Cross multiply
    136,608.39x = 204,863.36 × 57,728.76
  4. Step 4: Simplify right side
    136,608.39x = 11,826,507,453.59
  5. Step 5: Solve for x
    x = 11,826,507,453.59/136,608.39
  6. Step 6: Final answer
    x = 86,572.34

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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.