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Finding the Fourth Proportional to 199,148.80, 298,492.80 and 80,761.60

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Solution

The fourth proportional to 199,148.80, 298,492.80 and 80,761.60 is: 121,048.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,148.80 : 298,492.80 = 80,761.60 : x
  2. Step 2: Convert to fraction form
    199,148.80/298,492.80 = 80,761.60/x
  3. Step 3: Cross multiply
    199,148.80x = 298,492.80 × 80,761.60
  4. Step 4: Simplify right side
    199,148.80x = 24,106,756,116.48
  5. Step 5: Solve for x
    x = 24,106,756,116.48/199,148.80
  6. Step 6: Final answer
    x = 121,048.96

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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.