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Finding the Fourth Proportional to 143,327.70, 214,991.55 and 123,644.70

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Solution

The fourth proportional to 143,327.70, 214,991.55 and 123,644.70 is: 185,467.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,327.70 : 214,991.55 = 123,644.70 : x
  2. Step 2: Convert to fraction form
    143,327.70/214,991.55 = 123,644.70/x
  3. Step 3: Cross multiply
    143,327.70x = 214,991.55 × 123,644.70
  4. Step 4: Simplify right side
    143,327.70x = 26,582,565,702.29
  5. Step 5: Solve for x
    x = 26,582,565,702.29/143,327.70
  6. Step 6: Final answer
    x = 185,467.05

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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.