Home / 121,435.41-181,993.19-68,126.38

Finding the Fourth Proportional to 121,435.41, 181,993.19 and 68,126.38

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Solution

The fourth proportional to 121,435.41, 181,993.19 and 68,126.38 is: 102,099.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,435.41 : 181,993.19 = 68,126.38 : x
  2. Step 2: Convert to fraction form
    121,435.41/181,993.19 = 68,126.38/x
  3. Step 3: Cross multiply
    121,435.41x = 181,993.19 × 68,126.38
  4. Step 4: Simplify right side
    121,435.41x = 12,398,537,219.35
  5. Step 5: Solve for x
    x = 12,398,537,219.35/121,435.41
  6. Step 6: Final answer
    x = 102,099.85

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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.