Home / 131,481.21-181,460.05-74,131.58

Finding the Fourth Proportional to 131,481.21, 181,460.05 and 74,131.58

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Solution

The fourth proportional to 131,481.21, 181,460.05 and 74,131.58 is: 102,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,481.21 : 181,460.05 = 74,131.58 : x
  2. Step 2: Convert to fraction form
    131,481.21/181,460.05 = 74,131.58/x
  3. Step 3: Cross multiply
    131,481.21x = 181,460.05 × 74,131.58
  4. Step 4: Simplify right side
    131,481.21x = 13,451,920,213.38
  5. Step 5: Solve for x
    x = 13,451,920,213.38/131,481.21
  6. Step 6: Final answer
    x = 102,310.59

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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.