Home / 143,081.21-214,626.39-71,965.03

Finding the Fourth Proportional to 143,081.21, 214,626.39 and 71,965.03

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Solution

The fourth proportional to 143,081.21, 214,626.39 and 71,965.03 is: 107,949.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,081.21 : 214,626.39 = 71,965.03 : x
  2. Step 2: Convert to fraction form
    143,081.21/214,626.39 = 71,965.03/x
  3. Step 3: Cross multiply
    143,081.21x = 214,626.39 × 71,965.03
  4. Step 4: Simplify right side
    143,081.21x = 15,445,594,595.14
  5. Step 5: Solve for x
    x = 15,445,594,595.14/143,081.21
  6. Step 6: Final answer
    x = 107,949.85

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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.