Finding the Fourth Proportional to 126,679.19, 189,640.17 and 76,607.82
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Solution
The fourth proportional to 126,679.19, 189,640.17 and 76,607.82 is: 114,682.77
Step by Step Solution
- Step 1: Write the proportion equation
126,679.19 : 189,640.17 = 76,607.82 : x - Step 2: Convert to fraction form
126,679.19/189,640.17 = 76,607.82/x - Step 3: Cross multiply
126,679.19x = 189,640.17 × 76,607.82 - Step 4: Simplify right side
126,679.19x = 14,527,920,008.13 - Step 5: Solve for x
x = 14,527,920,008.13/126,679.19 - Step 6: Final answer
x = 114,682.77
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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.