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Finding the Fourth Proportional to 120,888.65, 166,818.99 and 67,171.83

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Solution

The fourth proportional to 120,888.65, 166,818.99 and 67,171.83 is: 92,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,888.65 : 166,818.99 = 67,171.83 : x
  2. Step 2: Convert to fraction form
    120,888.65/166,818.99 = 67,171.83/x
  3. Step 3: Cross multiply
    120,888.65x = 166,818.99 × 67,171.83
  4. Step 4: Simplify right side
    120,888.65x = 11,205,536,837.05
  5. Step 5: Solve for x
    x = 11,205,536,837.05/120,888.65
  6. Step 6: Final answer
    x = 92,693.04

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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.