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Finding the Fourth Proportional to 129,406.56, 194,109.84 and 35,912.40

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Solution

The fourth proportional to 129,406.56, 194,109.84 and 35,912.40 is: 53,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,406.56 : 194,109.84 = 35,912.40 : x
  2. Step 2: Convert to fraction form
    129,406.56/194,109.84 = 35,912.40/x
  3. Step 3: Cross multiply
    129,406.56x = 194,109.84 × 35,912.40
  4. Step 4: Simplify right side
    129,406.56x = 6,970,950,218.02
  5. Step 5: Solve for x
    x = 6,970,950,218.02/129,406.56
  6. Step 6: Final answer
    x = 53,868.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.