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Finding the Fourth Proportional to 148,362.48, 204,738.84 and 81,296.88

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Solution

The fourth proportional to 148,362.48, 204,738.84 and 81,296.88 is: 112,188.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,362.48 : 204,738.84 = 81,296.88 : x
  2. Step 2: Convert to fraction form
    148,362.48/204,738.84 = 81,296.88/x
  3. Step 3: Cross multiply
    148,362.48x = 204,738.84 × 81,296.88
  4. Step 4: Simplify right side
    148,362.48x = 16,644,628,906.82
  5. Step 5: Solve for x
    x = 16,644,628,906.82/148,362.48
  6. Step 6: Final answer
    x = 112,188.94

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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.