Home / 141,315.35-195,012.96-77,651.78

Finding the Fourth Proportional to 141,315.35, 195,012.96 and 77,651.78

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Solution

The fourth proportional to 141,315.35, 195,012.96 and 77,651.78 is: 107,158.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,315.35 : 195,012.96 = 77,651.78 : x
  2. Step 2: Convert to fraction form
    141,315.35/195,012.96 = 77,651.78/x
  3. Step 3: Cross multiply
    141,315.35x = 195,012.96 × 77,651.78
  4. Step 4: Simplify right side
    141,315.35x = 15,143,103,467.07
  5. Step 5: Solve for x
    x = 15,143,103,467.07/141,315.35
  6. Step 6: Final answer
    x = 107,158.23

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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.