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Finding the Fourth Proportional to 136,338.62, 204,409.51 and 57,409.78

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Solution

The fourth proportional to 136,338.62, 204,409.51 and 57,409.78 is: 86,073.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,338.62 : 204,409.51 = 57,409.78 : x
  2. Step 2: Convert to fraction form
    136,338.62/204,409.51 = 57,409.78/x
  3. Step 3: Cross multiply
    136,338.62x = 204,409.51 × 57,409.78
  4. Step 4: Simplify right side
    136,338.62x = 11,735,104,999.01
  5. Step 5: Solve for x
    x = 11,735,104,999.01/136,338.62
  6. Step 6: Final answer
    x = 86,073.23

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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.