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Finding the Fourth Proportional to 143,896.48, 215,721.63 and 55,213.63

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Solution

The fourth proportional to 143,896.48, 215,721.63 and 55,213.63 is: 82,773.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,896.48 : 215,721.63 = 55,213.63 : x
  2. Step 2: Convert to fraction form
    143,896.48/215,721.63 = 55,213.63/x
  3. Step 3: Cross multiply
    143,896.48x = 215,721.63 × 55,213.63
  4. Step 4: Simplify right side
    143,896.48x = 11,910,774,261.82
  5. Step 5: Solve for x
    x = 11,910,774,261.82/143,896.48
  6. Step 6: Final answer
    x = 82,773.21

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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.