Finding the Fourth Proportional to 95.21, 142.99 and 87.18
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Solution
The fourth proportional to 95.21, 142.99 and 87.18 is: 130.92
Step by Step Solution
- Step 1: Write the proportion equation
95.21 : 142.99 = 87.18 : x - Step 2: Convert to fraction form
95.21/142.99 = 87.18/x - Step 3: Cross multiply
95.21x = 142.99 × 87.18 - Step 4: Simplify right side
95.21x = 12,465.11 - Step 5: Solve for x
x = 12,465.11/95.21 - Step 6: Final answer
x = 130.92
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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.