Finding the Fourth Proportional to 124,736.30, 172,136.09 and 68,147.68
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Solution
The fourth proportional to 124,736.30, 172,136.09 and 68,147.68 is: 94,043.79
Step by Step Solution
- Step 1: Write the proportion equation
124,736.30 : 172,136.09 = 68,147.68 : x - Step 2: Convert to fraction form
124,736.30/172,136.09 = 68,147.68/x - Step 3: Cross multiply
124,736.30x = 172,136.09 × 68,147.68 - Step 4: Simplify right side
124,736.30x = 11,730,674,857.22 - Step 5: Solve for x
x = 11,730,674,857.22/124,736.30 - Step 6: Final answer
x = 94,043.79
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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.