Finding the Fourth Proportional to 100,329.99, 138,466.92 and 57,316.29
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Solution
The fourth proportional to 100,329.99, 138,466.92 and 57,316.29 is: 79,103.07
Step by Step Solution
- Step 1: Write the proportion equation
100,329.99 : 138,466.92 = 57,316.29 : x - Step 2: Convert to fraction form
100,329.99/138,466.92 = 57,316.29/x - Step 3: Cross multiply
100,329.99x = 138,466.92 × 57,316.29 - Step 4: Simplify right side
100,329.99x = 7,936,410,142.13 - Step 5: Solve for x
x = 7,936,410,142.13/100,329.99 - Step 6: Final answer
x = 79,103.07
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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.