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Finding the Fourth Proportional to 192,680.20, 289,020.30 and 74,355.40

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Solution

The fourth proportional to 192,680.20, 289,020.30 and 74,355.40 is: 111,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,680.20 : 289,020.30 = 74,355.40 : x
  2. Step 2: Convert to fraction form
    192,680.20/289,020.30 = 74,355.40/x
  3. Step 3: Cross multiply
    192,680.20x = 289,020.30 × 74,355.40
  4. Step 4: Simplify right side
    192,680.20x = 21,490,220,014.62
  5. Step 5: Solve for x
    x = 21,490,220,014.62/192,680.20
  6. Step 6: Final answer
    x = 111,533.10

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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.