Finding the Fourth Proportional to 126,103.79, 189,211.39 and 66,117.92
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Solution
The fourth proportional to 126,103.79, 189,211.39 and 66,117.92 is: 99,206.09
Step by Step Solution
- Step 1: Write the proportion equation
126,103.79 : 189,211.39 = 66,117.92 : x - Step 2: Convert to fraction form
126,103.79/189,211.39 = 66,117.92/x - Step 3: Cross multiply
126,103.79x = 189,211.39 × 66,117.92 - Step 4: Simplify right side
126,103.79x = 12,510,263,871.98 - Step 5: Solve for x
x = 12,510,263,871.98/126,103.79 - Step 6: Final answer
x = 99,206.09
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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.