Home / 121,299.48-181,982.16-68,745.87

Finding the Fourth Proportional to 121,299.48, 181,982.16 and 68,745.87

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Solution

The fourth proportional to 121,299.48, 181,982.16 and 68,745.87 is: 103,137.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,299.48 : 181,982.16 = 68,745.87 : x
  2. Step 2: Convert to fraction form
    121,299.48/181,982.16 = 68,745.87/x
  3. Step 3: Cross multiply
    121,299.48x = 181,982.16 × 68,745.87
  4. Step 4: Simplify right side
    121,299.48x = 12,510,521,913.68
  5. Step 5: Solve for x
    x = 12,510,521,913.68/121,299.48
  6. Step 6: Final answer
    x = 103,137.47

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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.