Finding the Fourth Proportional to 87.19, 119.96 and 79.99
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Solution
The fourth proportional to 87.19, 119.96 and 79.99 is: 110.05
Step by Step Solution
- Step 1: Write the proportion equation
87.19 : 119.96 = 79.99 : x - Step 2: Convert to fraction form
87.19/119.96 = 79.99/x - Step 3: Cross multiply
87.19x = 119.96 × 79.99 - Step 4: Simplify right side
87.19x = 9,595.00 - Step 5: Solve for x
x = 9,595.00/87.19 - Step 6: Final answer
x = 110.05
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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.