Finding the Fourth Proportional to 124.63, 171.99 and 77.99
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Solution
The fourth proportional to 124.63, 171.99 and 77.99 is: 107.63
Step by Step Solution
- Step 1: Write the proportion equation
124.63 : 171.99 = 77.99 : x - Step 2: Convert to fraction form
124.63/171.99 = 77.99/x - Step 3: Cross multiply
124.63x = 171.99 × 77.99 - Step 4: Simplify right side
124.63x = 13,413.50 - Step 5: Solve for x
x = 13,413.50/124.63 - Step 6: Final answer
x = 107.63
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.