Finding the Fourth Proportional to 206,923.70, 310,439.55 and 66,685.70
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Solution
The fourth proportional to 206,923.70, 310,439.55 and 66,685.70 is: 100,045.95
Step by Step Solution
- Step 1: Write the proportion equation
206,923.70 : 310,439.55 = 66,685.70 : x - Step 2: Convert to fraction form
206,923.70/310,439.55 = 66,685.70/x - Step 3: Cross multiply
206,923.70x = 310,439.55 × 66,685.70 - Step 4: Simplify right side
206,923.70x = 20,701,878,699.44 - Step 5: Solve for x
x = 20,701,878,699.44/206,923.70 - Step 6: Final answer
x = 100,045.95
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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.