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Finding the Fourth Proportional to 143,558.48, 215,400.12 and 54,839.12

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Solution

The fourth proportional to 143,558.48, 215,400.12 and 54,839.12 is: 82,282.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,558.48 : 215,400.12 = 54,839.12 : x
  2. Step 2: Convert to fraction form
    143,558.48/215,400.12 = 54,839.12/x
  3. Step 3: Cross multiply
    143,558.48x = 215,400.12 × 54,839.12
  4. Step 4: Simplify right side
    143,558.48x = 11,812,353,028.69
  5. Step 5: Solve for x
    x = 11,812,353,028.69/143,558.48
  6. Step 6: Final answer
    x = 82,282.52

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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.