Finding the Fourth Proportional to 163,749.28, 225,976.08 and 92,129.44
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Solution
The fourth proportional to 163,749.28, 225,976.08 and 92,129.44 is: 127,139.79
Step by Step Solution
- Step 1: Write the proportion equation
163,749.28 : 225,976.08 = 92,129.44 : x - Step 2: Convert to fraction form
163,749.28/225,976.08 = 92,129.44/x - Step 3: Cross multiply
163,749.28x = 225,976.08 × 92,129.44 - Step 4: Simplify right side
163,749.28x = 20,819,049,703.80 - Step 5: Solve for x
x = 20,819,049,703.80/163,749.28 - Step 6: Final answer
x = 127,139.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.