Finding the Fourth Proportional to 139.05, 191.97 and 92.49
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Solution
The fourth proportional to 139.05, 191.97 and 92.49 is: 127.69
Step by Step Solution
- Step 1: Write the proportion equation
139.05 : 191.97 = 92.49 : x - Step 2: Convert to fraction form
139.05/191.97 = 92.49/x - Step 3: Cross multiply
139.05x = 191.97 × 92.49 - Step 4: Simplify right side
139.05x = 17,755.54 - Step 5: Solve for x
x = 17,755.54/139.05 - Step 6: Final answer
x = 127.69
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.