Home / 120,721.41-166,584.42-71,654.58

Finding the Fourth Proportional to 120,721.41, 166,584.42 and 71,654.58

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Solution

The fourth proportional to 120,721.41, 166,584.42 and 71,654.58 is: 98,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,721.41 : 166,584.42 = 71,654.58 : x
  2. Step 2: Convert to fraction form
    120,721.41/166,584.42 = 71,654.58/x
  3. Step 3: Cross multiply
    120,721.41x = 166,584.42 × 71,654.58
  4. Step 4: Simplify right side
    120,721.41x = 11,936,536,649.64
  5. Step 5: Solve for x
    x = 11,936,536,649.64/120,721.41
  6. Step 6: Final answer
    x = 98,876.72

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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.