Finding the Fourth Proportional to 129.07, 177.87 and 119.26
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Solution
The fourth proportional to 129.07, 177.87 and 119.26 is: 164.35
Step by Step Solution
- Step 1: Write the proportion equation
129.07 : 177.87 = 119.26 : x - Step 2: Convert to fraction form
129.07/177.87 = 119.26/x - Step 3: Cross multiply
129.07x = 177.87 × 119.26 - Step 4: Simplify right side
129.07x = 21,212.78 - Step 5: Solve for x
x = 21,212.78/129.07 - Step 6: Final answer
x = 164.35
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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.