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Finding the Fourth Proportional to 189,262.35, 261,174.80 and 104,379.42

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Solution

The fourth proportional to 189,262.35, 261,174.80 and 104,379.42 is: 144,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,262.35 : 261,174.80 = 104,379.42 : x
  2. Step 2: Convert to fraction form
    189,262.35/261,174.80 = 104,379.42/x
  3. Step 3: Cross multiply
    189,262.35x = 261,174.80 × 104,379.42
  4. Step 4: Simplify right side
    189,262.35x = 27,261,273,620.72
  5. Step 5: Solve for x
    x = 27,261,273,620.72/189,262.35
  6. Step 6: Final answer
    x = 144,039.60

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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.