Finding the Fourth Proportional to 121,376.67, 167,505.47 and 67,661.99
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Solution
The fourth proportional to 121,376.67, 167,505.47 and 67,661.99 is: 93,376.70
Step by Step Solution
- Step 1: Write the proportion equation
121,376.67 : 167,505.47 = 67,661.99 : x - Step 2: Convert to fraction form
121,376.67/167,505.47 = 67,661.99/x - Step 3: Cross multiply
121,376.67x = 167,505.47 × 67,661.99 - Step 4: Simplify right side
121,376.67x = 11,333,753,436.09 - Step 5: Solve for x
x = 11,333,753,436.09/121,376.67 - Step 6: Final answer
x = 93,376.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.