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Finding the Fourth Proportional to 143,994.82, 198,712.56 and 80,328.82

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Solution

The fourth proportional to 143,994.82, 198,712.56 and 80,328.82 is: 110,853.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,994.82 : 198,712.56 = 80,328.82 : x
  2. Step 2: Convert to fraction form
    143,994.82/198,712.56 = 80,328.82/x
  3. Step 3: Cross multiply
    143,994.82x = 198,712.56 × 80,328.82
  4. Step 4: Simplify right side
    143,994.82x = 15,962,345,463.98
  5. Step 5: Solve for x
    x = 15,962,345,463.98/143,994.82
  6. Step 6: Final answer
    x = 110,853.61

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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.