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Finding the Fourth Proportional to 143,311.88, 214,969.96 and 54,570.32

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Solution

The fourth proportional to 143,311.88, 214,969.96 and 54,570.32 is: 81,856.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,311.88 : 214,969.96 = 54,570.32 : x
  2. Step 2: Convert to fraction form
    143,311.88/214,969.96 = 54,570.32/x
  3. Step 3: Cross multiply
    143,311.88x = 214,969.96 × 54,570.32
  4. Step 4: Simplify right side
    143,311.88x = 11,730,979,507.59
  5. Step 5: Solve for x
    x = 11,730,979,507.59/143,311.88
  6. Step 6: Final answer
    x = 81,856.29

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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.