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Finding the Fourth Proportional to 163,638.54, 225,844.20 and 136,738.44

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Solution

The fourth proportional to 163,638.54, 225,844.20 and 136,738.44 is: 188,718.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,638.54 : 225,844.20 = 136,738.44 : x
  2. Step 2: Convert to fraction form
    163,638.54/225,844.20 = 136,738.44/x
  3. Step 3: Cross multiply
    163,638.54x = 225,844.20 × 136,738.44
  4. Step 4: Simplify right side
    163,638.54x = 30,881,583,591.05
  5. Step 5: Solve for x
    x = 30,881,583,591.05/163,638.54
  6. Step 6: Final answer
    x = 188,718.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.