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Finding the Fourth Proportional to 192,145.80, 288,045.90 and 125,617.80

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Solution

The fourth proportional to 192,145.80, 288,045.90 and 125,617.80 is: 188,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,145.80 : 288,045.90 = 125,617.80 : x
  2. Step 2: Convert to fraction form
    192,145.80/288,045.90 = 125,617.80/x
  3. Step 3: Cross multiply
    192,145.80x = 288,045.90 × 125,617.80
  4. Step 4: Simplify right side
    192,145.80x = 36,183,692,257.02
  5. Step 5: Solve for x
    x = 36,183,692,257.02/192,145.80
  6. Step 6: Final answer
    x = 188,313.73

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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.