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Finding the Fourth Proportional to 101,519.70, 140,050.26 and 65,721.30

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Solution

The fourth proportional to 101,519.70, 140,050.26 and 65,721.30 is: 90,665.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,519.70 : 140,050.26 = 65,721.30 : x
  2. Step 2: Convert to fraction form
    101,519.70/140,050.26 = 65,721.30/x
  3. Step 3: Cross multiply
    101,519.70x = 140,050.26 × 65,721.30
  4. Step 4: Simplify right side
    101,519.70x = 9,204,285,152.54
  5. Step 5: Solve for x
    x = 9,204,285,152.54/101,519.70
  6. Step 6: Final answer
    x = 90,665.02

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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.