Finding the Fourth Proportional to 124.72, 186.89 and 83.99
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Solution
The fourth proportional to 124.72, 186.89 and 83.99 is: 125.86
Step by Step Solution
- Step 1: Write the proportion equation
124.72 : 186.89 = 83.99 : x - Step 2: Convert to fraction form
124.72/186.89 = 83.99/x - Step 3: Cross multiply
124.72x = 186.89 × 83.99 - Step 4: Simplify right side
124.72x = 15,696.89 - Step 5: Solve for x
x = 15,696.89/124.72 - Step 6: Final answer
x = 125.86
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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.