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Finding the Fourth Proportional to 89,197.88, 133,813.52 and 72,702.44

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Solution

The fourth proportional to 89,197.88, 133,813.52 and 72,702.44 is: 109,067.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,197.88 : 133,813.52 = 72,702.44 : x
  2. Step 2: Convert to fraction form
    89,197.88/133,813.52 = 72,702.44/x
  3. Step 3: Cross multiply
    89,197.88x = 133,813.52 × 72,702.44
  4. Step 4: Simplify right side
    89,197.88x = 9,728,569,408.99
  5. Step 5: Solve for x
    x = 9,728,569,408.99/89,197.88
  6. Step 6: Final answer
    x = 109,067.27

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1.5x scale

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.