Finding the Fourth Proportional to 139.44, 192.34 and 115.99
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Solution
The fourth proportional to 139.44, 192.34 and 115.99 is: 159.99
Step by Step Solution
- Step 1: Write the proportion equation
139.44 : 192.34 = 115.99 : x - Step 2: Convert to fraction form
139.44/192.34 = 115.99/x - Step 3: Cross multiply
139.44x = 192.34 × 115.99 - Step 4: Simplify right side
139.44x = 22,309.52 - Step 5: Solve for x
x = 22,309.52/139.44 - Step 6: Final answer
x = 159.99
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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.