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Finding the Fourth Proportional to 143,694.56, 215,541.81 and 43,855.26

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Solution

The fourth proportional to 143,694.56, 215,541.81 and 43,855.26 is: 65,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.56 : 215,541.81 = 43,855.26 : x
  2. Step 2: Convert to fraction form
    143,694.56/215,541.81 = 43,855.26/x
  3. Step 3: Cross multiply
    143,694.56x = 215,541.81 × 43,855.26
  4. Step 4: Simplify right side
    143,694.56x = 9,452,642,118.42
  5. Step 5: Solve for x
    x = 9,452,642,118.42/143,694.56
  6. Step 6: Final answer
    x = 65,782.88

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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.