Finding the Fourth Proportional to 123.84, 171.12 and 94.80
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Solution
The fourth proportional to 123.84, 171.12 and 94.80 is: 130.99
Step by Step Solution
- Step 1: Write the proportion equation
123.84 : 171.12 = 94.80 : x - Step 2: Convert to fraction form
123.84/171.12 = 94.80/x - Step 3: Cross multiply
123.84x = 171.12 × 94.80 - Step 4: Simplify right side
123.84x = 16,222.18 - Step 5: Solve for x
x = 16,222.18/123.84 - Step 6: Final answer
x = 130.99
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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.