Finding the Fourth Proportional to 208,913.50, 313,366.68 and 66,757.74
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Solution
The fourth proportional to 208,913.50, 313,366.68 and 66,757.74 is: 100,135.47
Step by Step Solution
- Step 1: Write the proportion equation
208,913.50 : 313,366.68 = 66,757.74 : x - Step 2: Convert to fraction form
208,913.50/313,366.68 = 66,757.74/x - Step 3: Cross multiply
208,913.50x = 313,366.68 × 66,757.74 - Step 4: Simplify right side
208,913.50x = 20,919,651,348.10 - Step 5: Solve for x
x = 20,919,651,348.10/208,913.50 - Step 6: Final answer
x = 100,135.47
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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.