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Finding the Fourth Proportional to 143,234.92, 214,502.46 and 123,639.40

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Solution

The fourth proportional to 143,234.92, 214,502.46 and 123,639.40 is: 185,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,234.92 : 214,502.46 = 123,639.40 : x
  2. Step 2: Convert to fraction form
    143,234.92/214,502.46 = 123,639.40/x
  3. Step 3: Cross multiply
    143,234.92x = 214,502.46 × 123,639.40
  4. Step 4: Simplify right side
    143,234.92x = 26,520,955,452.92
  5. Step 5: Solve for x
    x = 26,520,955,452.92/143,234.92
  6. Step 6: Final answer
    x = 185,157.05

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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.