Finding the Fourth Proportional to 135,704.48, 187,279.44 and 79,112.48
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Solution
The fourth proportional to 135,704.48, 187,279.44 and 79,112.48 is: 109,179.45
Step by Step Solution
- Step 1: Write the proportion equation
135,704.48 : 187,279.44 = 79,112.48 : x - Step 2: Convert to fraction form
135,704.48/187,279.44 = 79,112.48/x - Step 3: Cross multiply
135,704.48x = 187,279.44 × 79,112.48 - Step 4: Simplify right side
135,704.48x = 14,816,140,951.41 - Step 5: Solve for x
x = 14,816,140,951.41/135,704.48 - Step 6: Final answer
x = 109,179.45
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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.