Home / 109,380.20-163,940.70-98,234.60

Finding the Fourth Proportional to 109,380.20, 163,940.70 and 98,234.60

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Solution

The fourth proportional to 109,380.20, 163,940.70 and 98,234.60 is: 147,235.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,380.20 : 163,940.70 = 98,234.60 : x
  2. Step 2: Convert to fraction form
    109,380.20/163,940.70 = 98,234.60/x
  3. Step 3: Cross multiply
    109,380.20x = 163,940.70 × 98,234.60
  4. Step 4: Simplify right side
    109,380.20x = 16,104,649,088.22
  5. Step 5: Solve for x
    x = 16,104,649,088.22/109,380.20
  6. Step 6: Final answer
    x = 147,235.51

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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.