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Finding the Fourth Proportional to 101,887.87, 140,605.76 and 63,669.61

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Solution

The fourth proportional to 101,887.87, 140,605.76 and 63,669.61 is: 87,864.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,887.87 : 140,605.76 = 63,669.61 : x
  2. Step 2: Convert to fraction form
    101,887.87/140,605.76 = 63,669.61/x
  3. Step 3: Cross multiply
    101,887.87x = 140,605.76 × 63,669.61
  4. Step 4: Simplify right side
    101,887.87x = 8,952,313,902.95
  5. Step 5: Solve for x
    x = 8,952,313,902.95/101,887.87
  6. Step 6: Final answer
    x = 87,864.37

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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.