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Finding the Fourth Proportional to 143,658.32, 215,481.72 and 54,908.24

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Solution

The fourth proportional to 143,658.32, 215,481.72 and 54,908.24 is: 82,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,658.32 : 215,481.72 = 54,908.24 : x
  2. Step 2: Convert to fraction form
    143,658.32/215,481.72 = 54,908.24/x
  3. Step 3: Cross multiply
    143,658.32x = 215,481.72 × 54,908.24
  4. Step 4: Simplify right side
    143,658.32x = 11,831,721,997.37
  5. Step 5: Solve for x
    x = 11,831,721,997.37/143,658.32
  6. Step 6: Final answer
    x = 82,360.16

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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.