Finding the Fourth Proportional to 136,621.89, 188,542.64 and 76,195.08
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Solution
The fourth proportional to 136,621.89, 188,542.64 and 76,195.08 is: 105,151.68
Step by Step Solution
- Step 1: Write the proportion equation
136,621.89 : 188,542.64 = 76,195.08 : x - Step 2: Convert to fraction form
136,621.89/188,542.64 = 76,195.08/x - Step 3: Cross multiply
136,621.89x = 188,542.64 × 76,195.08 - Step 4: Simplify right side
136,621.89x = 14,366,021,300.10 - Step 5: Solve for x
x = 14,366,021,300.10/136,621.89 - Step 6: Final answer
x = 105,151.68
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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.