Home / 129,485.40-194,228.55-35,991.06

Finding the Fourth Proportional to 129,485.40, 194,228.55 and 35,991.06

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Solution

The fourth proportional to 129,485.40, 194,228.55 and 35,991.06 is: 53,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,485.40 : 194,228.55 = 35,991.06 : x
  2. Step 2: Convert to fraction form
    129,485.40/194,228.55 = 35,991.06/x
  3. Step 3: Cross multiply
    129,485.40x = 194,228.55 × 35,991.06
  4. Step 4: Simplify right side
    129,485.40x = 6,990,491,396.76
  5. Step 5: Solve for x
    x = 6,990,491,396.76/129,485.40
  6. Step 6: Final answer
    x = 53,986.72

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Why These Related Problems?

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