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Finding the Fourth Proportional to 136,274.91, 188,057.49 and 75,845.54

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Solution

The fourth proportional to 136,274.91, 188,057.49 and 75,845.54 is: 104,665.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,274.91 : 188,057.49 = 75,845.54 : x
  2. Step 2: Convert to fraction form
    136,274.91/188,057.49 = 75,845.54/x
  3. Step 3: Cross multiply
    136,274.91x = 188,057.49 × 75,845.54
  4. Step 4: Simplify right side
    136,274.91x = 14,263,320,939.81
  5. Step 5: Solve for x
    x = 14,263,320,939.81/136,274.91
  6. Step 6: Final answer
    x = 104,665.79

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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.