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Finding the Fourth Proportional to 109,079.99, 163,620.21 and 30,194.45

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Solution

The fourth proportional to 109,079.99, 163,620.21 and 30,194.45 is: 45,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,079.99 : 163,620.21 = 30,194.45 : x
  2. Step 2: Convert to fraction form
    109,079.99/163,620.21 = 30,194.45/x
  3. Step 3: Cross multiply
    109,079.99x = 163,620.21 × 30,194.45
  4. Step 4: Simplify right side
    109,079.99x = 4,940,422,249.83
  5. Step 5: Solve for x
    x = 4,940,422,249.83/109,079.99
  6. Step 6: Final answer
    x = 45,291.74

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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.