Home / 139,794,874.40-192,874,175.60-81,045,814.64

Finding the Fourth Proportional to 139,794,874.40, 192,874,175.60 and 81,045,814.64

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Solution

The fourth proportional to 139,794,874.40, 192,874,175.60 and 81,045,814.64 is: 111,818,439.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794,874.40 : 192,874,175.60 = 81,045,814.64 : x
  2. Step 2: Convert to fraction form
    139,794,874.40/192,874,175.60 = 81,045,814.64/x
  3. Step 3: Cross multiply
    139,794,874.40x = 192,874,175.60 × 81,045,814.64
  4. Step 4: Simplify right side
    139,794,874.40x = 15,631,644,683,150,812
  5. Step 5: Solve for x
    x = 15,631,644,683,150,812/139,794,874.40
  6. Step 6: Final answer
    x = 111,818,439.34

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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.