Home / 139,161.39-192,142.58-85,518.33

Finding the Fourth Proportional to 139,161.39, 192,142.58 and 85,518.33

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Solution

The fourth proportional to 139,161.39, 192,142.58 and 85,518.33 is: 118,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,161.39 : 192,142.58 = 85,518.33 : x
  2. Step 2: Convert to fraction form
    139,161.39/192,142.58 = 85,518.33/x
  3. Step 3: Cross multiply
    139,161.39x = 192,142.58 × 85,518.33
  4. Step 4: Simplify right side
    139,161.39x = 16,431,712,135.90
  5. Step 5: Solve for x
    x = 16,431,712,135.90/139,161.39
  6. Step 6: Final answer
    x = 118,076.66

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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.