Finding the Fourth Proportional to 100,163.04, 138,224.99 and 54,841.02
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Solution
The fourth proportional to 100,163.04, 138,224.99 and 54,841.02 is: 75,680.60
Step by Step Solution
- Step 1: Write the proportion equation
100,163.04 : 138,224.99 = 54,841.02 : x - Step 2: Convert to fraction form
100,163.04/138,224.99 = 54,841.02/x - Step 3: Cross multiply
100,163.04x = 138,224.99 × 54,841.02 - Step 4: Simplify right side
100,163.04x = 7,580,399,081.50 - Step 5: Solve for x
x = 7,580,399,081.50/100,163.04 - Step 6: Final answer
x = 75,680.60
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1.5x scale
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.