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Finding the Fourth Proportional to 251,662.92, 347,290.43 and 136,937.69

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Solution

The fourth proportional to 251,662.92, 347,290.43 and 136,937.69 is: 188,971.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,662.92 : 347,290.43 = 136,937.69 : x
  2. Step 2: Convert to fraction form
    251,662.92/347,290.43 = 136,937.69/x
  3. Step 3: Cross multiply
    251,662.92x = 347,290.43 × 136,937.69
  4. Step 4: Simplify right side
    251,662.92x = 47,557,146,822.17
  5. Step 5: Solve for x
    x = 47,557,146,822.17/251,662.92
  6. Step 6: Final answer
    x = 188,971.61

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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.