Home / 129,858.03-194,639.40-54,931.41

Finding the Fourth Proportional to 129,858.03, 194,639.40 and 54,931.41

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Solution

The fourth proportional to 129,858.03, 194,639.40 and 54,931.41 is: 82,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,858.03 : 194,639.40 = 54,931.41 : x
  2. Step 2: Convert to fraction form
    129,858.03/194,639.40 = 54,931.41/x
  3. Step 3: Cross multiply
    129,858.03x = 194,639.40 × 54,931.41
  4. Step 4: Simplify right side
    129,858.03x = 10,691,816,683.55
  5. Step 5: Solve for x
    x = 10,691,816,683.55/129,858.03
  6. Step 6: Final answer
    x = 82,334.66

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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.