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Finding the Fourth Proportional to 143,452.56, 215,190.36 and 43,621.68

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Solution

The fourth proportional to 143,452.56, 215,190.36 and 43,621.68 is: 65,436.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,452.56 : 215,190.36 = 43,621.68 : x
  2. Step 2: Convert to fraction form
    143,452.56/215,190.36 = 43,621.68/x
  3. Step 3: Cross multiply
    143,452.56x = 215,190.36 × 43,621.68
  4. Step 4: Simplify right side
    143,452.56x = 9,386,965,023.00
  5. Step 5: Solve for x
    x = 9,386,965,023.00/143,452.56
  6. Step 6: Final answer
    x = 65,436.02

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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.