Finding the Fourth Proportional to 91.34, 137.20 and 88.09
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Solution
The fourth proportional to 91.34, 137.20 and 88.09 is: 132.32
Step by Step Solution
- Step 1: Write the proportion equation
91.34 : 137.20 = 88.09 : x - Step 2: Convert to fraction form
91.34/137.20 = 88.09/x - Step 3: Cross multiply
91.34x = 137.20 × 88.09 - Step 4: Simplify right side
91.34x = 12,085.95 - Step 5: Solve for x
x = 12,085.95/91.34 - Step 6: Final answer
x = 132.32
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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.