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Finding the Fourth Proportional to 143,694.53, 215,541.80 and 43,855.25

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Solution

The fourth proportional to 143,694.53, 215,541.80 and 43,855.25 is: 65,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.53 : 215,541.80 = 43,855.25 : x
  2. Step 2: Convert to fraction form
    143,694.53/215,541.80 = 43,855.25/x
  3. Step 3: Cross multiply
    143,694.53x = 215,541.80 × 43,855.25
  4. Step 4: Simplify right side
    143,694.53x = 9,452,640,172.94
  5. Step 5: Solve for x
    x = 9,452,640,172.94/143,694.53
  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.