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Finding the Fourth Proportional to 143,343.56, 214,936.36 and 68,482.56

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Solution

The fourth proportional to 143,343.56, 214,936.36 and 68,482.56 is: 102,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,343.56 : 214,936.36 = 68,482.56 : x
  2. Step 2: Convert to fraction form
    143,343.56/214,936.36 = 68,482.56/x
  3. Step 3: Cross multiply
    143,343.56x = 214,936.36 × 68,482.56
  4. Step 4: Simplify right side
    143,343.56x = 14,719,392,169.88
  5. Step 5: Solve for x
    x = 14,719,392,169.88/143,343.56
  6. Step 6: Final answer
    x = 102,686.11

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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.