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Finding the Fourth Proportional to 189,456.66, 261,450.21 and 104,573.74

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Solution

The fourth proportional to 189,456.66, 261,450.21 and 104,573.74 is: 144,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,456.66 : 261,450.21 = 104,573.74 : x
  2. Step 2: Convert to fraction form
    189,456.66/261,450.21 = 104,573.74/x
  3. Step 3: Cross multiply
    189,456.66x = 261,450.21 × 104,573.74
  4. Step 4: Simplify right side
    189,456.66x = 27,340,826,283.49
  5. Step 5: Solve for x
    x = 27,340,826,283.49/189,456.66
  6. Step 6: Final answer
    x = 144,311.78

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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.