Home / 144,001.20-198,720.90-80,338.85

Finding the Fourth Proportional to 144,001.20, 198,720.90 and 80,338.85

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Solution

The fourth proportional to 144,001.20, 198,720.90 and 80,338.85 is: 110,867.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,001.20 : 198,720.90 = 80,338.85 : x
  2. Step 2: Convert to fraction form
    144,001.20/198,720.90 = 80,338.85/x
  3. Step 3: Cross multiply
    144,001.20x = 198,720.90 × 80,338.85
  4. Step 4: Simplify right side
    144,001.20x = 15,965,007,583.36
  5. Step 5: Solve for x
    x = 15,965,007,583.36/144,001.20
  6. Step 6: Final answer
    x = 110,867.18

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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.