Home / 139,415.18-192,393.63-82,056.65

Finding the Fourth Proportional to 139,415.18, 192,393.63 and 82,056.65

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Solution

The fourth proportional to 139,415.18, 192,393.63 and 82,056.65 is: 113,238.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,415.18 : 192,393.63 = 82,056.65 : x
  2. Step 2: Convert to fraction form
    139,415.18/192,393.63 = 82,056.65/x
  3. Step 3: Cross multiply
    139,415.18x = 192,393.63 × 82,056.65
  4. Step 4: Simplify right side
    139,415.18x = 15,787,175,797.17
  5. Step 5: Solve for x
    x = 15,787,175,797.17/139,415.18
  6. Step 6: Final answer
    x = 113,238.58

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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.