Home / 148,761.92-205,291.44-80,778.56

Finding the Fourth Proportional to 148,761.92, 205,291.44 and 80,778.56

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Solution

The fourth proportional to 148,761.92, 205,291.44 and 80,778.56 is: 111,474.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,761.92 : 205,291.44 = 80,778.56 : x
  2. Step 2: Convert to fraction form
    148,761.92/205,291.44 = 80,778.56/x
  3. Step 3: Cross multiply
    148,761.92x = 205,291.44 × 80,778.56
  4. Step 4: Simplify right side
    148,761.92x = 16,583,146,903.53
  5. Step 5: Solve for x
    x = 16,583,146,903.53/148,761.92
  6. Step 6: Final answer
    x = 111,474.41

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1.5x scale

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.