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Finding the Fourth Proportional to 143,049.64, 214,490.78 and 43,179.88

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Solution

The fourth proportional to 143,049.64, 214,490.78 and 43,179.88 is: 64,744.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,049.64 : 214,490.78 = 43,179.88 : x
  2. Step 2: Convert to fraction form
    143,049.64/214,490.78 = 43,179.88/x
  3. Step 3: Cross multiply
    143,049.64x = 214,490.78 × 43,179.88
  4. Step 4: Simplify right side
    143,049.64x = 9,261,686,141.51
  5. Step 5: Solve for x
    x = 9,261,686,141.51/143,049.64
  6. Step 6: Final answer
    x = 64,744.56

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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.