Home / 128,936.24-193,481.04-69,770.72

Finding the Fourth Proportional to 128,936.24, 193,481.04 and 69,770.72

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Solution

The fourth proportional to 128,936.24, 193,481.04 and 69,770.72 is: 104,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,936.24 : 193,481.04 = 69,770.72 : x
  2. Step 2: Convert to fraction form
    128,936.24/193,481.04 = 69,770.72/x
  3. Step 3: Cross multiply
    128,936.24x = 193,481.04 × 69,770.72
  4. Step 4: Simplify right side
    128,936.24x = 13,499,311,467.15
  5. Step 5: Solve for x
    x = 13,499,311,467.15/128,936.24
  6. Step 6: Final answer
    x = 104,697.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.