Home / 128,451.42-192,716.01-91,083.69

Finding the Fourth Proportional to 128,451.42, 192,716.01 and 91,083.69

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Solution

The fourth proportional to 128,451.42, 192,716.01 and 91,083.69 is: 136,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,451.42 : 192,716.01 = 91,083.69 : x
  2. Step 2: Convert to fraction form
    128,451.42/192,716.01 = 91,083.69/x
  3. Step 3: Cross multiply
    128,451.42x = 192,716.01 × 91,083.69
  4. Step 4: Simplify right side
    128,451.42x = 17,553,285,312.88
  5. Step 5: Solve for x
    x = 17,553,285,312.88/128,451.42
  6. Step 6: Final answer
    x = 136,653.10

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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.