Finding the Fourth Proportional to 100,336.09, 138,470.03 and 55,624.09
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Solution
The fourth proportional to 100,336.09, 138,470.03 and 55,624.09 is: 76,764.70
Step by Step Solution
- Step 1: Write the proportion equation
100,336.09 : 138,470.03 = 55,624.09 : x - Step 2: Convert to fraction form
100,336.09/138,470.03 = 55,624.09/x - Step 3: Cross multiply
100,336.09x = 138,470.03 × 55,624.09 - Step 4: Simplify right side
100,336.09x = 7,702,269,411.02 - Step 5: Solve for x
x = 7,702,269,411.02/100,336.09 - Step 6: Final answer
x = 76,764.70
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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.