Finding the Fourth Proportional to 124.68, 171.95 and 80.99
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Solution
The fourth proportional to 124.68, 171.95 and 80.99 is: 111.70
Step by Step Solution
- Step 1: Write the proportion equation
124.68 : 171.95 = 80.99 : x - Step 2: Convert to fraction form
124.68/171.95 = 80.99/x - Step 3: Cross multiply
124.68x = 171.95 × 80.99 - Step 4: Simplify right side
124.68x = 13,926.23 - Step 5: Solve for x
x = 13,926.23/124.68 - Step 6: Final answer
x = 111.70
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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.