Finding the Fourth Proportional to 126,393.12, 189,625.12 and 55,321.96
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Solution
The fourth proportional to 126,393.12, 189,625.12 and 55,321.96 is: 82,998.45
Step by Step Solution
- Step 1: Write the proportion equation
126,393.12 : 189,625.12 = 55,321.96 : x - Step 2: Convert to fraction form
126,393.12/189,625.12 = 55,321.96/x - Step 3: Cross multiply
126,393.12x = 189,625.12 × 55,321.96 - Step 4: Simplify right side
126,393.12x = 10,490,433,303.64 - Step 5: Solve for x
x = 10,490,433,303.64/126,393.12 - Step 6: Final answer
x = 82,998.45
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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.