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Finding the Fourth Proportional to 136,034.69, 204,073.17 and 69,438.79

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Solution

The fourth proportional to 136,034.69, 204,073.17 and 69,438.79 is: 104,168.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,034.69 : 204,073.17 = 69,438.79 : x
  2. Step 2: Convert to fraction form
    136,034.69/204,073.17 = 69,438.79/x
  3. Step 3: Cross multiply
    136,034.69x = 204,073.17 × 69,438.79
  4. Step 4: Simplify right side
    136,034.69x = 14,170,593,225.69
  5. Step 5: Solve for x
    x = 14,170,593,225.69/136,034.69
  6. Step 6: Final answer
    x = 104,168.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.