Finding the Fourth Proportional to 124.79, 187.28 and 87.99
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Solution
The fourth proportional to 124.79, 187.28 and 87.99 is: 132.05
Step by Step Solution
- Step 1: Write the proportion equation
124.79 : 187.28 = 87.99 : x - Step 2: Convert to fraction form
124.79/187.28 = 87.99/x - Step 3: Cross multiply
124.79x = 187.28 × 87.99 - Step 4: Simplify right side
124.79x = 16,478.77 - Step 5: Solve for x
x = 16,478.77/124.79 - Step 6: Final answer
x = 132.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.