Home / 148,120.45-204,406.11-80,137.45

Finding the Fourth Proportional to 148,120.45, 204,406.11 and 80,137.45

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Solution

The fourth proportional to 148,120.45, 204,406.11 and 80,137.45 is: 110,589.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,120.45 : 204,406.11 = 80,137.45 : x
  2. Step 2: Convert to fraction form
    148,120.45/204,406.11 = 80,137.45/x
  3. Step 3: Cross multiply
    148,120.45x = 204,406.11 × 80,137.45
  4. Step 4: Simplify right side
    148,120.45x = 16,380,584,419.82
  5. Step 5: Solve for x
    x = 16,380,584,419.82/148,120.45
  6. Step 6: Final answer
    x = 110,589.62

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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.