Finding the Fourth Proportional to 128,049.68, 176,708.82 and 70,689.08
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Solution
The fourth proportional to 128,049.68, 176,708.82 and 70,689.08 is: 97,551.08
Step by Step Solution
- Step 1: Write the proportion equation
128,049.68 : 176,708.82 = 70,689.08 : x - Step 2: Convert to fraction form
128,049.68/176,708.82 = 70,689.08/x - Step 3: Cross multiply
128,049.68x = 176,708.82 × 70,689.08 - Step 4: Simplify right side
128,049.68x = 12,491,384,620.54 - Step 5: Solve for x
x = 12,491,384,620.54/128,049.68 - Step 6: Final answer
x = 97,551.08
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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.