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Finding the Fourth Proportional to 117,676.80, 176,515.20 and 67,910.40

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Solution

The fourth proportional to 117,676.80, 176,515.20 and 67,910.40 is: 101,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,676.80 : 176,515.20 = 67,910.40 : x
  2. Step 2: Convert to fraction form
    117,676.80/176,515.20 = 67,910.40/x
  3. Step 3: Cross multiply
    117,676.80x = 176,515.20 × 67,910.40
  4. Step 4: Simplify right side
    117,676.80x = 11,987,217,838.08
  5. Step 5: Solve for x
    x = 11,987,217,838.08/117,676.80
  6. Step 6: Final answer
    x = 101,865.60

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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.