Finding the Fourth Proportional to 116.79, 161.19 and 112.99
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Solution
The fourth proportional to 116.79, 161.19 and 112.99 is: 155.95
Step by Step Solution
- Step 1: Write the proportion equation
116.79 : 161.19 = 112.99 : x - Step 2: Convert to fraction form
116.79/161.19 = 112.99/x - Step 3: Cross multiply
116.79x = 161.19 × 112.99 - Step 4: Simplify right side
116.79x = 18,212.29 - Step 5: Solve for x
x = 18,212.29/116.79 - Step 6: Final answer
x = 155.95
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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.