Home / 141,408.30-195,138.47-77,745.61

Finding the Fourth Proportional to 141,408.30, 195,138.47 and 77,745.61

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Solution

The fourth proportional to 141,408.30, 195,138.47 and 77,745.61 is: 107,286.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,408.30 : 195,138.47 = 77,745.61 : x
  2. Step 2: Convert to fraction form
    141,408.30/195,138.47 = 77,745.61/x
  3. Step 3: Cross multiply
    141,408.30x = 195,138.47 × 77,745.61
  4. Step 4: Simplify right side
    141,408.30x = 15,171,158,020.20
  5. Step 5: Solve for x
    x = 15,171,158,020.20/141,408.30
  6. Step 6: Final answer
    x = 107,286.19

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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.