Finding the Fourth Proportional to 126,453.68, 189,640.02 and 70,320.68
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Solution
The fourth proportional to 126,453.68, 189,640.02 and 70,320.68 is: 105,458.50
Step by Step Solution
- Step 1: Write the proportion equation
126,453.68 : 189,640.02 = 70,320.68 : x - Step 2: Convert to fraction form
126,453.68/189,640.02 = 70,320.68/x - Step 3: Cross multiply
126,453.68x = 189,640.02 × 70,320.68 - Step 4: Simplify right side
126,453.68x = 13,335,615,161.61 - Step 5: Solve for x
x = 13,335,615,161.61/126,453.68 - Step 6: Final answer
x = 105,458.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.