Finding the Fourth Proportional to 155,378.02, 214,428.18 and 91,715.80
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Solution
The fourth proportional to 155,378.02, 214,428.18 and 91,715.80 is: 126,571.65
Step by Step Solution
- Step 1: Write the proportion equation
155,378.02 : 214,428.18 = 91,715.80 : x - Step 2: Convert to fraction form
155,378.02/214,428.18 = 91,715.80/x - Step 3: Cross multiply
155,378.02x = 214,428.18 × 91,715.80 - Step 4: Simplify right side
155,378.02x = 19,666,452,071.24 - Step 5: Solve for x
x = 19,666,452,071.24/155,378.02 - Step 6: Final answer
x = 126,571.65
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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.