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Finding the Fourth Proportional to 143,168.10, 214,425.10 and 68,340.90

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Solution

The fourth proportional to 143,168.10, 214,425.10 and 68,340.90 is: 102,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,168.10 : 214,425.10 = 68,340.90 : x
  2. Step 2: Convert to fraction form
    143,168.10/214,425.10 = 68,340.90/x
  3. Step 3: Cross multiply
    143,168.10x = 214,425.10 × 68,340.90
  4. Step 4: Simplify right side
    143,168.10x = 14,654,004,316.59
  5. Step 5: Solve for x
    x = 14,654,004,316.59/143,168.10
  6. Step 6: Final answer
    x = 102,355.23

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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.