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Finding the Fourth Proportional to 143,967.80, 198,679.79 and 80,304.23

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Solution

The fourth proportional to 143,967.80, 198,679.79 and 80,304.23 is: 110,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,967.80 : 198,679.79 = 80,304.23 : x
  2. Step 2: Convert to fraction form
    143,967.80/198,679.79 = 80,304.23/x
  3. Step 3: Cross multiply
    143,967.80x = 198,679.79 × 80,304.23
  4. Step 4: Simplify right side
    143,967.80x = 15,954,828,249.97
  5. Step 5: Solve for x
    x = 15,954,828,249.97/143,967.80
  6. Step 6: Final answer
    x = 110,822.20

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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.