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Finding the Fourth Proportional to 188,412.70, 259,905.71 and 119,375.86

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Solution

The fourth proportional to 188,412.70, 259,905.71 and 119,375.86 is: 164,672.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,412.70 : 259,905.71 = 119,375.86 : x
  2. Step 2: Convert to fraction form
    188,412.70/259,905.71 = 119,375.86/x
  3. Step 3: Cross multiply
    188,412.70x = 259,905.71 × 119,375.86
  4. Step 4: Simplify right side
    188,412.70x = 31,026,468,273.48
  5. Step 5: Solve for x
    x = 31,026,468,273.48/188,412.70
  6. Step 6: Final answer
    x = 164,672.91

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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.