Finding the Fourth Proportional to 124.73, 172.16 and 83.31
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Solution
The fourth proportional to 124.73, 172.16 and 83.31 is: 114.99
Step by Step Solution
- Step 1: Write the proportion equation
124.73 : 172.16 = 83.31 : x - Step 2: Convert to fraction form
124.73/172.16 = 83.31/x - Step 3: Cross multiply
124.73x = 172.16 × 83.31 - Step 4: Simplify right side
124.73x = 14,342.23 - Step 5: Solve for x
x = 14,342.23/124.73 - Step 6: Final answer
x = 114.99
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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.