Finding the Fourth Proportional to 156,087.70, 233,785.95 and 128,439.70
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Solution
The fourth proportional to 156,087.70, 233,785.95 and 128,439.70 is: 192,375.17
Step by Step Solution
- Step 1: Write the proportion equation
156,087.70 : 233,785.95 = 128,439.70 : x - Step 2: Convert to fraction form
156,087.70/233,785.95 = 128,439.70/x - Step 3: Cross multiply
156,087.70x = 233,785.95 × 128,439.70 - Step 4: Simplify right side
156,087.70x = 30,027,397,282.22 - Step 5: Solve for x
x = 30,027,397,282.22/156,087.70 - Step 6: Final answer
x = 192,375.17
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1.5x scale
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.