Home / 141,400.50-195,137.25-77,742.90

Finding the Fourth Proportional to 141,400.50, 195,137.25 and 77,742.90

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Solution

The fourth proportional to 141,400.50, 195,137.25 and 77,742.90 is: 107,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,400.50 : 195,137.25 = 77,742.90 : x
  2. Step 2: Convert to fraction form
    141,400.50/195,137.25 = 77,742.90/x
  3. Step 3: Cross multiply
    141,400.50x = 195,137.25 × 77,742.90
  4. Step 4: Simplify right side
    141,400.50x = 15,170,535,713.03
  5. Step 5: Solve for x
    x = 15,170,535,713.03/141,400.50
  6. Step 6: Final answer
    x = 107,287.71

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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.