Finding the Fourth Proportional to 90.88, 136.37 and 83.99
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Solution
The fourth proportional to 90.88, 136.37 and 83.99 is: 126.03
Step by Step Solution
- Step 1: Write the proportion equation
90.88 : 136.37 = 83.99 : x - Step 2: Convert to fraction form
90.88/136.37 = 83.99/x - Step 3: Cross multiply
90.88x = 136.37 × 83.99 - Step 4: Simplify right side
90.88x = 11,453.72 - Step 5: Solve for x
x = 11,453.72/90.88 - Step 6: Final answer
x = 126.03
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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.