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Finding the Fourth Proportional to 189,174.56, 261,061.11 and 104,291.60

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Solution

The fourth proportional to 189,174.56, 261,061.11 and 104,291.60 is: 143,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,174.56 : 261,061.11 = 104,291.60 : x
  2. Step 2: Convert to fraction form
    189,174.56/261,061.11 = 104,291.60/x
  3. Step 3: Cross multiply
    189,174.56x = 261,061.11 × 104,291.60
  4. Step 4: Simplify right side
    189,174.56x = 27,226,479,554.37
  5. Step 5: Solve for x
    x = 27,226,479,554.37/189,174.56
  6. Step 6: Final answer
    x = 143,922.52

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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.