Home / 128,855.08-193,338.24-69,732.46

Finding the Fourth Proportional to 128,855.08, 193,338.24 and 69,732.46

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Solution

The fourth proportional to 128,855.08, 193,338.24 and 69,732.46 is: 104,628.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,855.08 : 193,338.24 = 69,732.46 : x
  2. Step 2: Convert to fraction form
    128,855.08/193,338.24 = 69,732.46/x
  3. Step 3: Cross multiply
    128,855.08x = 193,338.24 × 69,732.46
  4. Step 4: Simplify right side
    128,855.08x = 13,481,951,087.27
  5. Step 5: Solve for x
    x = 13,481,951,087.27/128,855.08
  6. Step 6: Final answer
    x = 104,628.79

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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.