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Finding the Fourth Proportional to 143,635.81, 215,468.29 and 54,963.89

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Solution

The fourth proportional to 143,635.81, 215,468.29 and 54,963.89 is: 82,451.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,635.81 : 215,468.29 = 54,963.89 : x
  2. Step 2: Convert to fraction form
    143,635.81/215,468.29 = 54,963.89/x
  3. Step 3: Cross multiply
    143,635.81x = 215,468.29 × 54,963.89
  4. Step 4: Simplify right side
    143,635.81x = 11,842,975,997.42
  5. Step 5: Solve for x
    x = 11,842,975,997.42/143,635.81
  6. Step 6: Final answer
    x = 82,451.42

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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.