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Finding the Fourth Proportional to 189,456.72, 261,450.30 and 104,573.80

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Solution

The fourth proportional to 189,456.72, 261,450.30 and 104,573.80 is: 144,311.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,456.72 : 261,450.30 = 104,573.80 : x
  2. Step 2: Convert to fraction form
    189,456.72/261,450.30 = 104,573.80/x
  3. Step 3: Cross multiply
    189,456.72x = 261,450.30 × 104,573.80
  4. Step 4: Simplify right side
    189,456.72x = 27,340,851,382.14
  5. Step 5: Solve for x
    x = 27,340,851,382.14/189,456.72
  6. Step 6: Final answer
    x = 144,311.86

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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.