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Finding the Fourth Proportional to 189,805, 261,908.20 and 104,910.52

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Solution

The fourth proportional to 189,805, 261,908.20 and 104,910.52 is: 144,763.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,805 : 261,908.20 = 104,910.52 : x
  2. Step 2: Convert to fraction form
    189,805/261,908.20 = 104,910.52/x
  3. Step 3: Cross multiply
    189,805x = 261,908.20 × 104,910.52
  4. Step 4: Simplify right side
    189,805x = 27,476,925,454.26
  5. Step 5: Solve for x
    x = 27,476,925,454.26/189,805
  6. Step 6: Final answer
    x = 144,763.97

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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.