Home / 144,128.20-198,896.40-80,465.44

Finding the Fourth Proportional to 144,128.20, 198,896.40 and 80,465.44

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Solution

The fourth proportional to 144,128.20, 198,896.40 and 80,465.44 is: 111,042.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,128.20 : 198,896.40 = 80,465.44 : x
  2. Step 2: Convert to fraction form
    144,128.20/198,896.40 = 80,465.44/x
  3. Step 3: Cross multiply
    144,128.20x = 198,896.40 × 80,465.44
  4. Step 4: Simplify right side
    144,128.20x = 16,004,286,340.42
  5. Step 5: Solve for x
    x = 16,004,286,340.42/144,128.20
  6. Step 6: Final answer
    x = 111,042.02

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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.