Finding the Fourth Proportional to 100,220.67, 138,298.62 and 54,889.63
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Solution
The fourth proportional to 100,220.67, 138,298.62 and 54,889.63 is: 75,744.46
Step by Step Solution
- Step 1: Write the proportion equation
100,220.67 : 138,298.62 = 54,889.63 : x - Step 2: Convert to fraction form
100,220.67/138,298.62 = 54,889.63/x - Step 3: Cross multiply
100,220.67x = 138,298.62 × 54,889.63 - Step 4: Simplify right side
100,220.67x = 7,591,160,081.31 - Step 5: Solve for x
x = 7,591,160,081.31/100,220.67 - Step 6: Final answer
x = 75,744.46
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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.