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Finding the Fourth Proportional to 101,083.88, 139,452.72 and 74,179.64

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Solution

The fourth proportional to 101,083.88, 139,452.72 and 74,179.64 is: 102,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,083.88 : 139,452.72 = 74,179.64 : x
  2. Step 2: Convert to fraction form
    101,083.88/139,452.72 = 74,179.64/x
  3. Step 3: Cross multiply
    101,083.88x = 139,452.72 × 74,179.64
  4. Step 4: Simplify right side
    101,083.88x = 10,344,552,403.44
  5. Step 5: Solve for x
    x = 10,344,552,403.44/101,083.88
  6. Step 6: Final answer
    x = 102,336.32

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1.5x scale

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.