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Finding the Fourth Proportional to 143,969.80, 198,682.56 and 80,306.24

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Solution

The fourth proportional to 143,969.80, 198,682.56 and 80,306.24 is: 110,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,969.80 : 198,682.56 = 80,306.24 : x
  2. Step 2: Convert to fraction form
    143,969.80/198,682.56 = 80,306.24/x
  3. Step 3: Cross multiply
    143,969.80x = 198,682.56 × 80,306.24
  4. Step 4: Simplify right side
    143,969.80x = 15,955,449,347.17
  5. Step 5: Solve for x
    x = 15,955,449,347.17/143,969.80
  6. Step 6: Final answer
    x = 110,824.97

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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.