Home / 108,438.54-149,650.91-68,137.39

Finding the Fourth Proportional to 108,438.54, 149,650.91 and 68,137.39

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Solution

The fourth proportional to 108,438.54, 149,650.91 and 68,137.39 is: 94,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,438.54 : 149,650.91 = 68,137.39 : x
  2. Step 2: Convert to fraction form
    108,438.54/149,650.91 = 68,137.39/x
  3. Step 3: Cross multiply
    108,438.54x = 149,650.91 × 68,137.39
  4. Step 4: Simplify right side
    108,438.54x = 10,196,822,418.52
  5. Step 5: Solve for x
    x = 10,196,822,418.52/108,438.54
  6. Step 6: Final answer
    x = 94,033.20

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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.