Finding the Fourth Proportional to 129.14, 193.76 and 47.99
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Solution
The fourth proportional to 129.14, 193.76 and 47.99 is: 72.00
Step by Step Solution
- Step 1: Write the proportion equation
129.14 : 193.76 = 47.99 : x - Step 2: Convert to fraction form
129.14/193.76 = 47.99/x - Step 3: Cross multiply
129.14x = 193.76 × 47.99 - Step 4: Simplify right side
129.14x = 9,297.33 - Step 5: Solve for x
x = 9,297.33/129.14 - Step 6: Final answer
x = 72.00
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.