Home / 139,178.32-192,065.44-75,515.96

Finding the Fourth Proportional to 139,178.32, 192,065.44 and 75,515.96

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Solution

The fourth proportional to 139,178.32, 192,065.44 and 75,515.96 is: 104,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,178.32 : 192,065.44 = 75,515.96 : x
  2. Step 2: Convert to fraction form
    139,178.32/192,065.44 = 75,515.96/x
  3. Step 3: Cross multiply
    139,178.32x = 192,065.44 × 75,515.96
  4. Step 4: Simplify right side
    139,178.32x = 14,504,006,084.42
  5. Step 5: Solve for x
    x = 14,504,006,084.42/139,178.32
  6. Step 6: Final answer
    x = 104,211.68

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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.