Finding the Fourth Proportional to 126,682.23, 189,644.51 and 76,610.79
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Solution
The fourth proportional to 126,682.23, 189,644.51 and 76,610.79 is: 114,687.08
Step by Step Solution
- Step 1: Write the proportion equation
126,682.23 : 189,644.51 = 76,610.79 : x - Step 2: Convert to fraction form
126,682.23/189,644.51 = 76,610.79/x - Step 3: Cross multiply
126,682.23x = 189,644.51 × 76,610.79 - Step 4: Simplify right side
126,682.23x = 14,528,815,347.21 - Step 5: Solve for x
x = 14,528,815,347.21/126,682.23 - Step 6: Final answer
x = 114,687.08
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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.