Home / 139,383.57-192,350.09-85,703.66

Finding the Fourth Proportional to 139,383.57, 192,350.09 and 85,703.66

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Solution

The fourth proportional to 139,383.57, 192,350.09 and 85,703.66 is: 118,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,383.57 : 192,350.09 = 85,703.66 : x
  2. Step 2: Convert to fraction form
    139,383.57/192,350.09 = 85,703.66/x
  3. Step 3: Cross multiply
    139,383.57x = 192,350.09 × 85,703.66
  4. Step 4: Simplify right side
    139,383.57x = 16,485,105,324.06
  5. Step 5: Solve for x
    x = 16,485,105,324.06/139,383.57
  6. Step 6: Final answer
    x = 118,271.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.