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Finding the Fourth Proportional to 188,904, 260,687.52 and 104,020.88

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Solution

The fourth proportional to 188,904, 260,687.52 and 104,020.88 is: 143,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,904 : 260,687.52 = 104,020.88 : x
  2. Step 2: Convert to fraction form
    188,904/260,687.52 = 104,020.88/x
  3. Step 3: Cross multiply
    188,904x = 260,687.52 × 104,020.88
  4. Step 4: Simplify right side
    188,904x = 27,116,945,235.42
  5. Step 5: Solve for x
    x = 27,116,945,235.42/188,904
  6. Step 6: Final answer
    x = 143,548.81

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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.