Finding the Fourth Proportional to 206,487.16, 284,917.74 and 121,621.12
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Solution
The fourth proportional to 206,487.16, 284,917.74 and 121,621.12 is: 167,816.80
Step by Step Solution
- Step 1: Write the proportion equation
206,487.16 : 284,917.74 = 121,621.12 : x - Step 2: Convert to fraction form
206,487.16/284,917.74 = 121,621.12/x - Step 3: Cross multiply
206,487.16x = 284,917.74 × 121,621.12 - Step 4: Simplify right side
206,487.16x = 34,652,014,646.67 - Step 5: Solve for x
x = 34,652,014,646.67/206,487.16 - Step 6: Final answer
x = 167,816.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.