Finding the Fourth Proportional to 151,396.21, 208,911.11 and 93,243.68
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Solution
The fourth proportional to 151,396.21, 208,911.11 and 93,243.68 is: 128,666.63
Step by Step Solution
- Step 1: Write the proportion equation
151,396.21 : 208,911.11 = 93,243.68 : x - Step 2: Convert to fraction form
151,396.21/208,911.11 = 93,243.68/x - Step 3: Cross multiply
151,396.21x = 208,911.11 × 93,243.68 - Step 4: Simplify right side
151,396.21x = 19,479,640,689.28 - Step 5: Solve for x
x = 19,479,640,689.28/151,396.21 - Step 6: Final answer
x = 128,666.63
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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.