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Finding the Fourth Proportional to 189,788.88, 261,886.16 and 104,891.16

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Solution

The fourth proportional to 189,788.88, 261,886.16 and 104,891.16 is: 144,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,788.88 : 261,886.16 = 104,891.16 : x
  2. Step 2: Convert to fraction form
    189,788.88/261,886.16 = 104,891.16/x
  3. Step 3: Cross multiply
    189,788.88x = 261,886.16 × 104,891.16
  4. Step 4: Simplify right side
    189,788.88x = 27,469,543,110.35
  5. Step 5: Solve for x
    x = 27,469,543,110.35/189,788.88
  6. Step 6: Final answer
    x = 144,737.37

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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.