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Finding the Fourth Proportional to 101,997.53, 140,697.96 and 63,690.57

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Solution

The fourth proportional to 101,997.53, 140,697.96 and 63,690.57 is: 87,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,997.53 : 140,697.96 = 63,690.57 : x
  2. Step 2: Convert to fraction form
    101,997.53/140,697.96 = 63,690.57/x
  3. Step 3: Cross multiply
    101,997.53x = 140,697.96 × 63,690.57
  4. Step 4: Simplify right side
    101,997.53x = 8,961,133,270.24
  5. Step 5: Solve for x
    x = 8,961,133,270.24/101,997.53
  6. Step 6: Final answer
    x = 87,856.38

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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.