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Finding the Fourth Proportional to 250,141.88, 345,192.38 and 136,964.64

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Solution

The fourth proportional to 250,141.88, 345,192.38 and 136,964.64 is: 189,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,141.88 : 345,192.38 = 136,964.64 : x
  2. Step 2: Convert to fraction form
    250,141.88/345,192.38 = 136,964.64/x
  3. Step 3: Cross multiply
    250,141.88x = 345,192.38 × 136,964.64
  4. Step 4: Simplify right side
    250,141.88x = 47,279,150,057.44
  5. Step 5: Solve for x
    x = 47,279,150,057.44/250,141.88
  6. Step 6: Final answer
    x = 189,009.33

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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.