Home / 141,619.32-212,427-57,378.78

Finding the Fourth Proportional to 141,619.32, 212,427 and 57,378.78

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Solution

The fourth proportional to 141,619.32, 212,427 and 57,378.78 is: 86,067.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,619.32 : 212,427 = 57,378.78 : x
  2. Step 2: Convert to fraction form
    141,619.32/212,427 = 57,378.78/x
  3. Step 3: Cross multiply
    141,619.32x = 212,427 × 57,378.78
  4. Step 4: Simplify right side
    141,619.32x = 12,188,802,099.06
  5. Step 5: Solve for x
    x = 12,188,802,099.06/141,619.32
  6. Step 6: Final answer
    x = 86,067.37

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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.