Home / 141,855.86-195,761.03-78,194.72

Finding the Fourth Proportional to 141,855.86, 195,761.03 and 78,194.72

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Solution

The fourth proportional to 141,855.86, 195,761.03 and 78,194.72 is: 107,908.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.86 : 195,761.03 = 78,194.72 : x
  2. Step 2: Convert to fraction form
    141,855.86/195,761.03 = 78,194.72/x
  3. Step 3: Cross multiply
    141,855.86x = 195,761.03 × 78,194.72
  4. Step 4: Simplify right side
    141,855.86x = 15,307,477,948.96
  5. Step 5: Solve for x
    x = 15,307,477,948.96/141,855.86
  6. Step 6: Final answer
    x = 107,908.68

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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.