Home / 141,868.49-195,779.87-78,208.56

Finding the Fourth Proportional to 141,868.49, 195,779.87 and 78,208.56

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Solution

The fourth proportional to 141,868.49, 195,779.87 and 78,208.56 is: 107,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,868.49 : 195,779.87 = 78,208.56 : x
  2. Step 2: Convert to fraction form
    141,868.49/195,779.87 = 78,208.56/x
  3. Step 3: Cross multiply
    141,868.49x = 195,779.87 × 78,208.56
  4. Step 4: Simplify right side
    141,868.49x = 15,311,661,318.64
  5. Step 5: Solve for x
    x = 15,311,661,318.64/141,868.49
  6. Step 6: Final answer
    x = 107,928.56

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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.