Home / 139,178.25-192,115.80-82,589.63

Finding the Fourth Proportional to 139,178.25, 192,115.80 and 82,589.63

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Solution

The fourth proportional to 139,178.25, 192,115.80 and 82,589.63 is: 114,003.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,178.25 : 192,115.80 = 82,589.63 : x
  2. Step 2: Convert to fraction form
    139,178.25/192,115.80 = 82,589.63/x
  3. Step 3: Cross multiply
    139,178.25x = 192,115.80 × 82,589.63
  4. Step 4: Simplify right side
    139,178.25x = 15,866,771,878.58
  5. Step 5: Solve for x
    x = 15,866,771,878.58/139,178.25
  6. Step 6: Final answer
    x = 114,003.24

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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.