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Finding the Fourth Proportional to 143,506.62, 215,119.40 and 53,483.42

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Solution

The fourth proportional to 143,506.62, 215,119.40 and 53,483.42 is: 80,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,506.62 : 215,119.40 = 53,483.42 : x
  2. Step 2: Convert to fraction form
    143,506.62/215,119.40 = 53,483.42/x
  3. Step 3: Cross multiply
    143,506.62x = 215,119.40 × 53,483.42
  4. Step 4: Simplify right side
    143,506.62x = 11,505,321,490.73
  5. Step 5: Solve for x
    x = 11,505,321,490.73/143,506.62
  6. Step 6: Final answer
    x = 80,172.76

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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.