Finding the Fourth Proportional to 128,183.68, 176,897.04 and 70,826.70
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Solution
The fourth proportional to 128,183.68, 176,897.04 and 70,826.70 is: 97,742.81
Step by Step Solution
- Step 1: Write the proportion equation
128,183.68 : 176,897.04 = 70,826.70 : x - Step 2: Convert to fraction form
128,183.68/176,897.04 = 70,826.70/x - Step 3: Cross multiply
128,183.68x = 176,897.04 × 70,826.70 - Step 4: Simplify right side
128,183.68x = 12,529,032,952.96 - Step 5: Solve for x
x = 12,529,032,952.96/128,183.68 - Step 6: Final answer
x = 97,742.81
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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.