Finding the Fourth Proportional to 100,302.66, 138,412.53 and 57,858.66
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Solution
The fourth proportional to 100,302.66, 138,412.53 and 57,858.66 is: 79,841.99
Step by Step Solution
- Step 1: Write the proportion equation
100,302.66 : 138,412.53 = 57,858.66 : x - Step 2: Convert to fraction form
100,302.66/138,412.53 = 57,858.66/x - Step 3: Cross multiply
100,302.66x = 138,412.53 × 57,858.66 - Step 4: Simplify right side
100,302.66x = 8,008,363,513.01 - Step 5: Solve for x
x = 8,008,363,513.01/100,302.66 - Step 6: Final answer
x = 79,841.99
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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.