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Finding the Fourth Proportional to 143,689.62, 198,297.79 and 80,027.42

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Solution

The fourth proportional to 143,689.62, 198,297.79 and 80,027.42 is: 110,441.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,689.62 : 198,297.79 = 80,027.42 : x
  2. Step 2: Convert to fraction form
    143,689.62/198,297.79 = 80,027.42/x
  3. Step 3: Cross multiply
    143,689.62x = 198,297.79 × 80,027.42
  4. Step 4: Simplify right side
    143,689.62x = 15,869,259,533.91
  5. Step 5: Solve for x
    x = 15,869,259,533.91/143,689.62
  6. Step 6: Final answer
    x = 110,441.24

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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.