Finding the Fourth Proportional to 118,640.05, 163,697.95 and 70,257.19
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Solution
The fourth proportional to 118,640.05, 163,697.95 and 70,257.19 is: 96,939.92
Step by Step Solution
- Step 1: Write the proportion equation
118,640.05 : 163,697.95 = 70,257.19 : x - Step 2: Convert to fraction form
118,640.05/163,697.95 = 70,257.19/x - Step 3: Cross multiply
118,640.05x = 163,697.95 × 70,257.19 - Step 4: Simplify right side
118,640.05x = 11,500,957,171.87 - Step 5: Solve for x
x = 11,500,957,171.87/118,640.05 - Step 6: Final answer
x = 96,939.92
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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.