Home / 129,489.85-194,416.49-66,355.33

Finding the Fourth Proportional to 129,489.85, 194,416.49 and 66,355.33

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Solution

The fourth proportional to 129,489.85, 194,416.49 and 66,355.33 is: 99,626.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489.85 : 194,416.49 = 66,355.33 : x
  2. Step 2: Convert to fraction form
    129,489.85/194,416.49 = 66,355.33/x
  3. Step 3: Cross multiply
    129,489.85x = 194,416.49 × 66,355.33
  4. Step 4: Simplify right side
    129,489.85x = 12,900,570,351.39
  5. Step 5: Solve for x
    x = 12,900,570,351.39/129,489.85
  6. Step 6: Final answer
    x = 99,626.11

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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.