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Finding the Fourth Proportional to 136,469.70, 188,325.66 and 76,039.04

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Solution

The fourth proportional to 136,469.70, 188,325.66 and 76,039.04 is: 104,932.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,469.70 : 188,325.66 = 76,039.04 : x
  2. Step 2: Convert to fraction form
    136,469.70/188,325.66 = 76,039.04/x
  3. Step 3: Cross multiply
    136,469.70x = 188,325.66 × 76,039.04
  4. Step 4: Simplify right side
    136,469.70x = 14,320,102,393.77
  5. Step 5: Solve for x
    x = 14,320,102,393.77/136,469.70
  6. Step 6: Final answer
    x = 104,932.47

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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.