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Finding the Fourth Proportional to 148,487.69, 204,912.36 and 80,504.45

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Solution

The fourth proportional to 148,487.69, 204,912.36 and 80,504.45 is: 111,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,487.69 : 204,912.36 = 80,504.45 : x
  2. Step 2: Convert to fraction form
    148,487.69/204,912.36 = 80,504.45/x
  3. Step 3: Cross multiply
    148,487.69x = 204,912.36 × 80,504.45
  4. Step 4: Simplify right side
    148,487.69x = 16,496,357,654.17
  5. Step 5: Solve for x
    x = 16,496,357,654.17/148,487.69
  6. Step 6: Final answer
    x = 111,095.79

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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.