Finding the Fourth Proportional to 129.24, 192.99 and 108.93
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Solution
The fourth proportional to 129.24, 192.99 and 108.93 is: 162.66
Step by Step Solution
- Step 1: Write the proportion equation
129.24 : 192.99 = 108.93 : x - Step 2: Convert to fraction form
129.24/192.99 = 108.93/x - Step 3: Cross multiply
129.24x = 192.99 × 108.93 - Step 4: Simplify right side
129.24x = 21,022.40 - Step 5: Solve for x
x = 21,022.40/129.24 - Step 6: Final answer
x = 162.66
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.