Finding the Fourth Proportional to 107.93, 161.80 and 87.68
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Solution
The fourth proportional to 107.93, 161.80 and 87.68 is: 131.44
Step by Step Solution
- Step 1: Write the proportion equation
107.93 : 161.80 = 87.68 : x - Step 2: Convert to fraction form
107.93/161.80 = 87.68/x - Step 3: Cross multiply
107.93x = 161.80 × 87.68 - Step 4: Simplify right side
107.93x = 14,186.81 - Step 5: Solve for x
x = 14,186.81/107.93 - Step 6: Final answer
x = 131.44
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.