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Finding the Fourth Proportional to 188,128.44, 259,630.74 and 107,553.87

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Solution

The fourth proportional to 188,128.44, 259,630.74 and 107,553.87 is: 148,432.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,128.44 : 259,630.74 = 107,553.87 : x
  2. Step 2: Convert to fraction form
    188,128.44/259,630.74 = 107,553.87/x
  3. Step 3: Cross multiply
    188,128.44x = 259,630.74 × 107,553.87
  4. Step 4: Simplify right side
    188,128.44x = 27,924,290,857.96
  5. Step 5: Solve for x
    x = 27,924,290,857.96/188,128.44
  6. Step 6: Final answer
    x = 148,432.05

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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.