Finding the Fourth Proportional to 136,716.48, 188,673.24 and 79,351.48
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Solution
The fourth proportional to 136,716.48, 188,673.24 and 79,351.48 is: 109,507.65
Step by Step Solution
- Step 1: Write the proportion equation
136,716.48 : 188,673.24 = 79,351.48 : x - Step 2: Convert to fraction form
136,716.48/188,673.24 = 79,351.48/x - Step 3: Cross multiply
136,716.48x = 188,673.24 × 79,351.48 - Step 4: Simplify right side
136,716.48x = 14,971,500,830.40 - Step 5: Solve for x
x = 14,971,500,830.40/136,716.48 - Step 6: Final answer
x = 109,507.65
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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.