Finding the Fourth Proportional to 126.24, 173.70 and 115.08
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Solution
The fourth proportional to 126.24, 173.70 and 115.08 is: 158.34
Step by Step Solution
- Step 1: Write the proportion equation
126.24 : 173.70 = 115.08 : x - Step 2: Convert to fraction form
126.24/173.70 = 115.08/x - Step 3: Cross multiply
126.24x = 173.70 × 115.08 - Step 4: Simplify right side
126.24x = 19,989.40 - Step 5: Solve for x
x = 19,989.40/126.24 - Step 6: Final answer
x = 158.34
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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.