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Finding the Fourth Proportional to 136,641.84, 203,604.36 and 121,736.22

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Solution

The fourth proportional to 136,641.84, 203,604.36 and 121,736.22 is: 181,394.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,641.84 : 203,604.36 = 121,736.22 : x
  2. Step 2: Convert to fraction form
    136,641.84/203,604.36 = 121,736.22/x
  3. Step 3: Cross multiply
    136,641.84x = 203,604.36 × 121,736.22
  4. Step 4: Simplify right side
    136,641.84x = 24,786,025,161.92
  5. Step 5: Solve for x
    x = 24,786,025,161.92/136,641.84
  6. Step 6: Final answer
    x = 181,394.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.