Finding the Fourth Proportional to 131.63, 181.69 and 88.09
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Solution
The fourth proportional to 131.63, 181.69 and 88.09 is: 121.59
Step by Step Solution
- Step 1: Write the proportion equation
131.63 : 181.69 = 88.09 : x - Step 2: Convert to fraction form
131.63/181.69 = 88.09/x - Step 3: Cross multiply
131.63x = 181.69 × 88.09 - Step 4: Simplify right side
131.63x = 16,004.89 - Step 5: Solve for x
x = 16,004.89/131.63 - Step 6: Final answer
x = 121.59
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.