Finding the Fourth Proportional to 106.68, 160.08 and 91.08
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Solution
The fourth proportional to 106.68, 160.08 and 91.08 is: 136.67
Step by Step Solution
- Step 1: Write the proportion equation
106.68 : 160.08 = 91.08 : x - Step 2: Convert to fraction form
106.68/160.08 = 91.08/x - Step 3: Cross multiply
106.68x = 160.08 × 91.08 - Step 4: Simplify right side
106.68x = 14,580.09 - Step 5: Solve for x
x = 14,580.09/106.68 - Step 6: Final answer
x = 136.67
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.