Home / 141,331.42-212,028.27-78,243.58

Finding the Fourth Proportional to 141,331.42, 212,028.27 and 78,243.58

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Solution

The fourth proportional to 141,331.42, 212,028.27 and 78,243.58 is: 117,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,331.42 : 212,028.27 = 78,243.58 : x
  2. Step 2: Convert to fraction form
    141,331.42/212,028.27 = 78,243.58/x
  3. Step 3: Cross multiply
    141,331.42x = 212,028.27 × 78,243.58
  4. Step 4: Simplify right side
    141,331.42x = 16,589,850,906.01
  5. Step 5: Solve for x
    x = 16,589,850,906.01/141,331.42
  6. Step 6: Final answer
    x = 117,382.61

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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.