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Finding the Fourth Proportional to 192,091.80, 288,137.70 and 67,445.40

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Solution

The fourth proportional to 192,091.80, 288,137.70 and 67,445.40 is: 101,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,091.80 : 288,137.70 = 67,445.40 : x
  2. Step 2: Convert to fraction form
    192,091.80/288,137.70 = 67,445.40/x
  3. Step 3: Cross multiply
    192,091.80x = 288,137.70 × 67,445.40
  4. Step 4: Simplify right side
    192,091.80x = 19,433,562,431.58
  5. Step 5: Solve for x
    x = 19,433,562,431.58/192,091.80
  6. Step 6: Final answer
    x = 101,168.10

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1.5x scale

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.