Home / 140,722.37-194,193.30-78,633.39

Finding the Fourth Proportional to 140,722.37, 194,193.30 and 78,633.39

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Solution

The fourth proportional to 140,722.37, 194,193.30 and 78,633.39 is: 108,512.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,722.37 : 194,193.30 = 78,633.39 : x
  2. Step 2: Convert to fraction form
    140,722.37/194,193.30 = 78,633.39/x
  3. Step 3: Cross multiply
    140,722.37x = 194,193.30 × 78,633.39
  4. Step 4: Simplify right side
    140,722.37x = 15,270,077,887.33
  5. Step 5: Solve for x
    x = 15,270,077,887.33/140,722.37
  6. Step 6: Final answer
    x = 108,512.09

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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.