Finding the Fourth Proportional to 137.70, 190.08 and 94.23
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Solution
The fourth proportional to 137.70, 190.08 and 94.23 is: 130.07
Step by Step Solution
- Step 1: Write the proportion equation
137.70 : 190.08 = 94.23 : x - Step 2: Convert to fraction form
137.70/190.08 = 94.23/x - Step 3: Cross multiply
137.70x = 190.08 × 94.23 - Step 4: Simplify right side
137.70x = 17,911.24 - Step 5: Solve for x
x = 17,911.24/137.70 - Step 6: Final answer
x = 130.07
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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.