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Finding the Fourth Proportional to 189,805.52, 261,921.39 and 104,917.52

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Solution

The fourth proportional to 189,805.52, 261,921.39 and 104,917.52 is: 144,780.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,805.52 : 261,921.39 = 104,917.52 : x
  2. Step 2: Convert to fraction form
    189,805.52/261,921.39 = 104,917.52/x
  3. Step 3: Cross multiply
    189,805.52x = 261,921.39 × 104,917.52
  4. Step 4: Simplify right side
    189,805.52x = 27,480,142,673.75
  5. Step 5: Solve for x
    x = 27,480,142,673.75/189,805.52
  6. Step 6: Final answer
    x = 144,780.52

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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.