Home / 148,761.87-205,285.76-80,777.37

Finding the Fourth Proportional to 148,761.87, 205,285.76 and 80,777.37

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Solution

The fourth proportional to 148,761.87, 205,285.76 and 80,777.37 is: 111,469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,761.87 : 205,285.76 = 80,777.37 : x
  2. Step 2: Convert to fraction form
    148,761.87/205,285.76 = 80,777.37/x
  3. Step 3: Cross multiply
    148,761.87x = 205,285.76 × 80,777.37
  4. Step 4: Simplify right side
    148,761.87x = 16,582,443,387.36
  5. Step 5: Solve for x
    x = 16,582,443,387.36/148,761.87
  6. Step 6: Final answer
    x = 111,469.72

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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.