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Finding the Fourth Proportional to 140,481.36, 210,743.04 and 51,728.04

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Solution

The fourth proportional to 140,481.36, 210,743.04 and 51,728.04 is: 77,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,481.36 : 210,743.04 = 51,728.04 : x
  2. Step 2: Convert to fraction form
    140,481.36/210,743.04 = 51,728.04/x
  3. Step 3: Cross multiply
    140,481.36x = 210,743.04 × 51,728.04
  4. Step 4: Simplify right side
    140,481.36x = 10,901,324,402.84
  5. Step 5: Solve for x
    x = 10,901,324,402.84/140,481.36
  6. Step 6: Final answer
    x = 77,599.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.