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Finding the Fourth Proportional to 143,850.99, 215,626.67 and 80,578.32

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Solution

The fourth proportional to 143,850.99, 215,626.67 and 80,578.32 is: 120,783.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,850.99 : 215,626.67 = 80,578.32 : x
  2. Step 2: Convert to fraction form
    143,850.99/215,626.67 = 80,578.32/x
  3. Step 3: Cross multiply
    143,850.99x = 215,626.67 × 80,578.32
  4. Step 4: Simplify right side
    143,850.99x = 17,374,834,412.90
  5. Step 5: Solve for x
    x = 17,374,834,412.90/143,850.99
  6. Step 6: Final answer
    x = 120,783.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.