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Finding the Fourth Proportional to 103,620.65, 155,171.77 and 82,884.65

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Solution

The fourth proportional to 103,620.65, 155,171.77 and 82,884.65 is: 124,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,620.65 : 155,171.77 = 82,884.65 : x
  2. Step 2: Convert to fraction form
    103,620.65/155,171.77 = 82,884.65/x
  3. Step 3: Cross multiply
    103,620.65x = 155,171.77 × 82,884.65
  4. Step 4: Simplify right side
    103,620.65x = 12,861,357,846.33
  5. Step 5: Solve for x
    x = 12,861,357,846.33/103,620.65
  6. Step 6: Final answer
    x = 124,119.64

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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.