Home / 210,789.41-290,882.09-120,174.56

Finding the Fourth Proportional to 210,789.41, 290,882.09 and 120,174.56

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Solution

The fourth proportional to 210,789.41, 290,882.09 and 120,174.56 is: 165,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,789.41 : 290,882.09 = 120,174.56 : x
  2. Step 2: Convert to fraction form
    210,789.41/290,882.09 = 120,174.56/x
  3. Step 3: Cross multiply
    210,789.41x = 290,882.09 × 120,174.56
  4. Step 4: Simplify right side
    210,789.41x = 34,956,627,256.59
  5. Step 5: Solve for x
    x = 34,956,627,256.59/210,789.41
  6. Step 6: Final answer
    x = 165,836.73

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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.