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Finding the Fourth Proportional to 148,188.65, 204,500.36 and 81,120.65

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Solution

The fourth proportional to 148,188.65, 204,500.36 and 81,120.65 is: 111,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,188.65 : 204,500.36 = 81,120.65 : x
  2. Step 2: Convert to fraction form
    148,188.65/204,500.36 = 81,120.65/x
  3. Step 3: Cross multiply
    148,188.65x = 204,500.36 × 81,120.65
  4. Step 4: Simplify right side
    148,188.65x = 16,589,201,308.73
  5. Step 5: Solve for x
    x = 16,589,201,308.73/148,188.65
  6. Step 6: Final answer
    x = 111,946.51

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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.