Home / 139,725.80-192,881.22-83,142.44

Finding the Fourth Proportional to 139,725.80, 192,881.22 and 83,142.44

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Solution

The fourth proportional to 139,725.80, 192,881.22 and 83,142.44 is: 114,772.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.80 : 192,881.22 = 83,142.44 : x
  2. Step 2: Convert to fraction form
    139,725.80/192,881.22 = 83,142.44/x
  3. Step 3: Cross multiply
    139,725.80x = 192,881.22 × 83,142.44
  4. Step 4: Simplify right side
    139,725.80x = 16,036,615,260.98
  5. Step 5: Solve for x
    x = 16,036,615,260.98/139,725.80
  6. Step 6: Final answer
    x = 114,772.04

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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.