Home / 121,315.44-181,992.96-38,190

Finding the Fourth Proportional to 121,315.44, 181,992.96 and 38,190

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Solution

The fourth proportional to 121,315.44, 181,992.96 and 38,190 is: 57,291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,315.44 : 181,992.96 = 38,190 : x
  2. Step 2: Convert to fraction form
    121,315.44/181,992.96 = 38,190/x
  3. Step 3: Cross multiply
    121,315.44x = 181,992.96 × 38,190
  4. Step 4: Simplify right side
    121,315.44x = 6,950,311,142.40
  5. Step 5: Solve for x
    x = 6,950,311,142.40/121,315.44
  6. Step 6: Final answer
    x = 57,291.23

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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.