Home / 198,946.80-298,420.20-67,618.80

Finding the Fourth Proportional to 198,946.80, 298,420.20 and 67,618.80

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Solution

The fourth proportional to 198,946.80, 298,420.20 and 67,618.80 is: 101,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,946.80 : 298,420.20 = 67,618.80 : x
  2. Step 2: Convert to fraction form
    198,946.80/298,420.20 = 67,618.80/x
  3. Step 3: Cross multiply
    198,946.80x = 298,420.20 × 67,618.80
  4. Step 4: Simplify right side
    198,946.80x = 20,178,815,819.76
  5. Step 5: Solve for x
    x = 20,178,815,819.76/198,946.80
  6. Step 6: Final answer
    x = 101,428.20

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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.