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Finding the Fourth Proportional to 143,381.80, 214,635.30 and 127,635.40

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Solution

The fourth proportional to 143,381.80, 214,635.30 and 127,635.40 is: 191,063.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,381.80 : 214,635.30 = 127,635.40 : x
  2. Step 2: Convert to fraction form
    143,381.80/214,635.30 = 127,635.40/x
  3. Step 3: Cross multiply
    143,381.80x = 214,635.30 × 127,635.40
  4. Step 4: Simplify right side
    143,381.80x = 27,395,062,369.62
  5. Step 5: Solve for x
    x = 27,395,062,369.62/143,381.80
  6. Step 6: Final answer
    x = 191,063.74

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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.