Finding the Fourth Proportional to 108.10, 161.36 and 93.75
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Solution
The fourth proportional to 108.10, 161.36 and 93.75 is: 139.95
Step by Step Solution
- Step 1: Write the proportion equation
108.10 : 161.36 = 93.75 : x - Step 2: Convert to fraction form
108.10/161.36 = 93.75/x - Step 3: Cross multiply
108.10x = 161.36 × 93.75 - Step 4: Simplify right side
108.10x = 15,127.81 - Step 5: Solve for x
x = 15,127.81/108.10 - Step 6: Final answer
x = 139.95
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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.