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Finding the Fourth Proportional to 144,019.01, 198,745.45 and 80,356.66

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Solution

The fourth proportional to 144,019.01, 198,745.45 and 80,356.66 is: 110,891.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,019.01 : 198,745.45 = 80,356.66 : x
  2. Step 2: Convert to fraction form
    144,019.01/198,745.45 = 80,356.66/x
  3. Step 3: Cross multiply
    144,019.01x = 198,745.45 × 80,356.66
  4. Step 4: Simplify right side
    144,019.01x = 15,970,519,854.44
  5. Step 5: Solve for x
    x = 15,970,519,854.44/144,019.01
  6. Step 6: Final answer
    x = 110,891.75

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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.