Home / 128,128.05-192,192.11-34,633.80

Finding the Fourth Proportional to 128,128.05, 192,192.11 and 34,633.80

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Solution

The fourth proportional to 128,128.05, 192,192.11 and 34,633.80 is: 51,950.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,128.05 : 192,192.11 = 34,633.80 : x
  2. Step 2: Convert to fraction form
    128,128.05/192,192.11 = 34,633.80/x
  3. Step 3: Cross multiply
    128,128.05x = 192,192.11 × 34,633.80
  4. Step 4: Simplify right side
    128,128.05x = 6,656,342,926.15
  5. Step 5: Solve for x
    x = 6,656,342,926.15/128,128.05
  6. Step 6: Final answer
    x = 51,950.71

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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.