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Finding the Fourth Proportional to 143,169.78, 214,703.64 and 54,447.24

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Solution

The fourth proportional to 143,169.78, 214,703.64 and 54,447.24 is: 81,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,169.78 : 214,703.64 = 54,447.24 : x
  2. Step 2: Convert to fraction form
    143,169.78/214,703.64 = 54,447.24/x
  3. Step 3: Cross multiply
    143,169.78x = 214,703.64 × 54,447.24
  4. Step 4: Simplify right side
    143,169.78x = 11,690,020,615.95
  5. Step 5: Solve for x
    x = 11,690,020,615.95/143,169.78
  6. Step 6: Final answer
    x = 81,651.45

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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.