Finding the Fourth Proportional to 126,701.28, 189,995.76 and 67,525.92
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Solution
The fourth proportional to 126,701.28, 189,995.76 and 67,525.92 is: 101,258.95
Step by Step Solution
- Step 1: Write the proportion equation
126,701.28 : 189,995.76 = 67,525.92 : x - Step 2: Convert to fraction form
126,701.28/189,995.76 = 67,525.92/x - Step 3: Cross multiply
126,701.28x = 189,995.76 × 67,525.92 - Step 4: Simplify right side
126,701.28x = 12,829,638,490.10 - Step 5: Solve for x
x = 12,829,638,490.10/126,701.28 - Step 6: Final answer
x = 101,258.95
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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.