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Finding the Fourth Proportional to 136,429.75, 188,265.73 and 75,174.04

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Solution

The fourth proportional to 136,429.75, 188,265.73 and 75,174.04 is: 103,736.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,429.75 : 188,265.73 = 75,174.04 : x
  2. Step 2: Convert to fraction form
    136,429.75/188,265.73 = 75,174.04/x
  3. Step 3: Cross multiply
    136,429.75x = 188,265.73 × 75,174.04
  4. Step 4: Simplify right side
    136,429.75x = 14,152,695,517.65
  5. Step 5: Solve for x
    x = 14,152,695,517.65/136,429.75
  6. Step 6: Final answer
    x = 103,736.14

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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.