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Finding the Fourth Proportional to 132,414.80, 198,103.80 and 85,758.80

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Solution

The fourth proportional to 132,414.80, 198,103.80 and 85,758.80 is: 128,302.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,414.80 : 198,103.80 = 85,758.80 : x
  2. Step 2: Convert to fraction form
    132,414.80/198,103.80 = 85,758.80/x
  3. Step 3: Cross multiply
    132,414.80x = 198,103.80 × 85,758.80
  4. Step 4: Simplify right side
    132,414.80x = 16,989,144,163.44
  5. Step 5: Solve for x
    x = 16,989,144,163.44/132,414.80
  6. Step 6: Final answer
    x = 128,302.46

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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.