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Finding the Fourth Proportional to 193,270.80, 289,675.80 and 80,950.80

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Solution

The fourth proportional to 193,270.80, 289,675.80 and 80,950.80 is: 121,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,270.80 : 289,675.80 = 80,950.80 : x
  2. Step 2: Convert to fraction form
    193,270.80/289,675.80 = 80,950.80/x
  3. Step 3: Cross multiply
    193,270.80x = 289,675.80 × 80,950.80
  4. Step 4: Simplify right side
    193,270.80x = 23,449,487,750.64
  5. Step 5: Solve for x
    x = 23,449,487,750.64/193,270.80
  6. Step 6: Final answer
    x = 121,329.70

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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.