Finding the Fourth Proportional to 124.19, 170.99 and 107.81
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Solution
The fourth proportional to 124.19, 170.99 and 107.81 is: 148.43
Step by Step Solution
- Step 1: Write the proportion equation
124.19 : 170.99 = 107.81 : x - Step 2: Convert to fraction form
124.19/170.99 = 107.81/x - Step 3: Cross multiply
124.19x = 170.99 × 107.81 - Step 4: Simplify right side
124.19x = 18,433.89 - Step 5: Solve for x
x = 18,433.89/124.19 - Step 6: Final answer
x = 148.43
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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.