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Finding the Fourth Proportional to 141,396.39, 195,128.29 and 76,865.75

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Solution

The fourth proportional to 141,396.39, 195,128.29 and 76,865.75 is: 106,075.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,396.39 : 195,128.29 = 76,865.75 : x
  2. Step 2: Convert to fraction form
    141,396.39/195,128.29 = 76,865.75/x
  3. Step 3: Cross multiply
    141,396.39x = 195,128.29 × 76,865.75
  4. Step 4: Simplify right side
    141,396.39x = 14,998,682,796.85
  5. Step 5: Solve for x
    x = 14,998,682,796.85/141,396.39
  6. Step 6: Final answer
    x = 106,075.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.