Home / 139,844.89-192,984.19-76,181.32

Finding the Fourth Proportional to 139,844.89, 192,984.19 and 76,181.32

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Solution

The fourth proportional to 139,844.89, 192,984.19 and 76,181.32 is: 105,129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.89 : 192,984.19 = 76,181.32 : x
  2. Step 2: Convert to fraction form
    139,844.89/192,984.19 = 76,181.32/x
  3. Step 3: Cross multiply
    139,844.89x = 192,984.19 × 76,181.32
  4. Step 4: Simplify right side
    139,844.89x = 14,701,790,333.33
  5. Step 5: Solve for x
    x = 14,701,790,333.33/139,844.89
  6. Step 6: Final answer
    x = 105,129.26

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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.