Finding the Fourth Proportional to 126,335.70, 189,289.42 and 76,310.68
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Solution
The fourth proportional to 126,335.70, 189,289.42 and 76,310.68 is: 114,336.68
Step by Step Solution
- Step 1: Write the proportion equation
126,335.70 : 189,289.42 = 76,310.68 : x - Step 2: Convert to fraction form
126,335.70/189,289.42 = 76,310.68/x - Step 3: Cross multiply
126,335.70x = 189,289.42 × 76,310.68 - Step 4: Simplify right side
126,335.70x = 14,444,804,357.01 - Step 5: Solve for x
x = 14,444,804,357.01/126,335.70 - Step 6: Final answer
x = 114,336.68
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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.