Home / 141,872.49-195,785.39-78,212.56

Finding the Fourth Proportional to 141,872.49, 195,785.39 and 78,212.56

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Solution

The fourth proportional to 141,872.49, 195,785.39 and 78,212.56 is: 107,934.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,872.49 : 195,785.39 = 78,212.56 : x
  2. Step 2: Convert to fraction form
    141,872.49/195,785.39 = 78,212.56/x
  3. Step 3: Cross multiply
    141,872.49x = 195,785.39 × 78,212.56
  4. Step 4: Simplify right side
    141,872.49x = 15,312,876,562.50
  5. Step 5: Solve for x
    x = 15,312,876,562.50/141,872.49
  6. Step 6: Final answer
    x = 107,934.08

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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.