Home / 121,213.89-181,849.46-38,107.89

Finding the Fourth Proportional to 121,213.89, 181,849.46 and 38,107.89

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Solution

The fourth proportional to 121,213.89, 181,849.46 and 38,107.89 is: 57,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,213.89 : 181,849.46 = 38,107.89 : x
  2. Step 2: Convert to fraction form
    121,213.89/181,849.46 = 38,107.89/x
  3. Step 3: Cross multiply
    121,213.89x = 181,849.46 × 38,107.89
  4. Step 4: Simplify right side
    121,213.89x = 6,929,899,027.70
  5. Step 5: Solve for x
    x = 6,929,899,027.70/121,213.89
  6. Step 6: Final answer
    x = 57,170.83

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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.