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Finding the Fourth Proportional to 163,234.80, 225,310.68 and 105,872.88

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Solution

The fourth proportional to 163,234.80, 225,310.68 and 105,872.88 is: 146,134.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,234.80 : 225,310.68 = 105,872.88 : x
  2. Step 2: Convert to fraction form
    163,234.80/225,310.68 = 105,872.88/x
  3. Step 3: Cross multiply
    163,234.80x = 225,310.68 × 105,872.88
  4. Step 4: Simplify right side
    163,234.80x = 23,854,290,586.36
  5. Step 5: Solve for x
    x = 23,854,290,586.36/163,234.80
  6. Step 6: Final answer
    x = 146,134.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.