Home / 128,198.03-192,315.27-39,458.93

Finding the Fourth Proportional to 128,198.03, 192,315.27 and 39,458.93

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Solution

The fourth proportional to 128,198.03, 192,315.27 and 39,458.93 is: 59,194.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,198.03 : 192,315.27 = 39,458.93 : x
  2. Step 2: Convert to fraction form
    128,198.03/192,315.27 = 39,458.93/x
  3. Step 3: Cross multiply
    128,198.03x = 192,315.27 × 39,458.93
  4. Step 4: Simplify right side
    128,198.03x = 7,588,554,579.57
  5. Step 5: Solve for x
    x = 7,588,554,579.57/128,198.03
  6. Step 6: Final answer
    x = 59,194.00

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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.