Home / 139,439.72-192,583.50-107,989.04

Finding the Fourth Proportional to 139,439.72, 192,583.50 and 107,989.04

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Solution

The fourth proportional to 139,439.72, 192,583.50 and 107,989.04 is: 149,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,439.72 : 192,583.50 = 107,989.04 : x
  2. Step 2: Convert to fraction form
    139,439.72/192,583.50 = 107,989.04/x
  3. Step 3: Cross multiply
    139,439.72x = 192,583.50 × 107,989.04
  4. Step 4: Simplify right side
    139,439.72x = 20,796,907,284.84
  5. Step 5: Solve for x
    x = 20,796,907,284.84/139,439.72
  6. Step 6: Final answer
    x = 149,146.22

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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.