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Finding the Fourth Proportional to 143,994.30, 198,708.30 and 80,330.46

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Solution

The fourth proportional to 143,994.30, 198,708.30 and 80,330.46 is: 110,853.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,994.30 : 198,708.30 = 80,330.46 : x
  2. Step 2: Convert to fraction form
    143,994.30/198,708.30 = 80,330.46/x
  3. Step 3: Cross multiply
    143,994.30x = 198,708.30 × 80,330.46
  4. Step 4: Simplify right side
    143,994.30x = 15,962,329,144.82
  5. Step 5: Solve for x
    x = 15,962,329,144.82/143,994.30
  6. Step 6: Final answer
    x = 110,853.90

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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.