Finding the Fourth Proportional to 206,970.72, 310,495.68 and 66,691.68
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Solution
The fourth proportional to 206,970.72, 310,495.68 and 66,691.68 is: 100,050.28
Step by Step Solution
- Step 1: Write the proportion equation
206,970.72 : 310,495.68 = 66,691.68 : x - Step 2: Convert to fraction form
206,970.72/310,495.68 = 66,691.68/x - Step 3: Cross multiply
206,970.72x = 310,495.68 × 66,691.68 - Step 4: Simplify right side
206,970.72x = 20,707,478,531.94 - Step 5: Solve for x
x = 20,707,478,531.94/206,970.72 - Step 6: Final answer
x = 100,050.28
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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.