Home / 141,418.08-195,157.68-77,760

Finding the Fourth Proportional to 141,418.08, 195,157.68 and 77,760

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Solution

The fourth proportional to 141,418.08, 195,157.68 and 77,760 is: 107,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,418.08 : 195,157.68 = 77,760 : x
  2. Step 2: Convert to fraction form
    141,418.08/195,157.68 = 77,760/x
  3. Step 3: Cross multiply
    141,418.08x = 195,157.68 × 77,760
  4. Step 4: Simplify right side
    141,418.08x = 15,175,461,196.80
  5. Step 5: Solve for x
    x = 15,175,461,196.80/141,418.08
  6. Step 6: Final answer
    x = 107,309.20

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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.