Home / 117,745.20-162,916.26-102,669.30

Finding the Fourth Proportional to 117,745.20, 162,916.26 and 102,669.30

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Solution

The fourth proportional to 117,745.20, 162,916.26 and 102,669.30 is: 142,056.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.20 : 162,916.26 = 102,669.30 : x
  2. Step 2: Convert to fraction form
    117,745.20/162,916.26 = 102,669.30/x
  3. Step 3: Cross multiply
    117,745.20x = 162,916.26 × 102,669.30
  4. Step 4: Simplify right side
    117,745.20x = 16,726,498,372.82
  5. Step 5: Solve for x
    x = 16,726,498,372.82/117,745.20
  6. Step 6: Final answer
    x = 142,056.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.