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Finding the Fourth Proportional to 109,379.20, 163,939.20 and 98,233.60

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Solution

The fourth proportional to 109,379.20, 163,939.20 and 98,233.60 is: 147,234.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,379.20 : 163,939.20 = 98,233.60 : x
  2. Step 2: Convert to fraction form
    109,379.20/163,939.20 = 98,233.60/x
  3. Step 3: Cross multiply
    109,379.20x = 163,939.20 × 98,233.60
  4. Step 4: Simplify right side
    109,379.20x = 16,104,337,797.12
  5. Step 5: Solve for x
    x = 16,104,337,797.12/109,379.20
  6. Step 6: Final answer
    x = 147,234.01

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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.