Home / 141,811.62-195,699.09-78,149.47

Finding the Fourth Proportional to 141,811.62, 195,699.09 and 78,149.47

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Solution

The fourth proportional to 141,811.62, 195,699.09 and 78,149.47 is: 107,845.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,811.62 : 195,699.09 = 78,149.47 : x
  2. Step 2: Convert to fraction form
    141,811.62/195,699.09 = 78,149.47/x
  3. Step 3: Cross multiply
    141,811.62x = 195,699.09 × 78,149.47
  4. Step 4: Simplify right side
    141,811.62x = 15,293,780,162.98
  5. Step 5: Solve for x
    x = 15,293,780,162.98/141,811.62
  6. Step 6: Final answer
    x = 107,845.75

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1.5x scale

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.