Home / 199,890.48-299,687.44-120,986.20

Finding the Fourth Proportional to 199,890.48, 299,687.44 and 120,986.20

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Solution

The fourth proportional to 199,890.48, 299,687.44 and 120,986.20 is: 181,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,890.48 : 299,687.44 = 120,986.20 : x
  2. Step 2: Convert to fraction form
    199,890.48/299,687.44 = 120,986.20/x
  3. Step 3: Cross multiply
    199,890.48x = 299,687.44 × 120,986.20
  4. Step 4: Simplify right side
    199,890.48x = 36,258,044,553.33
  5. Step 5: Solve for x
    x = 36,258,044,553.33/199,890.48
  6. Step 6: Final answer
    x = 181,389.55

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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.