Home / 121,439.12-182,180.64-54,910.58

Finding the Fourth Proportional to 121,439.12, 182,180.64 and 54,910.58

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Solution

The fourth proportional to 121,439.12, 182,180.64 and 54,910.58 is: 82,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,439.12 : 182,180.64 = 54,910.58 : x
  2. Step 2: Convert to fraction form
    121,439.12/182,180.64 = 54,910.58/x
  3. Step 3: Cross multiply
    121,439.12x = 182,180.64 × 54,910.58
  4. Step 4: Simplify right side
    121,439.12x = 10,003,644,607.17
  5. Step 5: Solve for x
    x = 10,003,644,607.17/121,439.12
  6. Step 6: Final answer
    x = 82,375.80

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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.