Finding the Fourth Proportional to 128,465.70, 192,698.55 and 33,695.70
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Solution
The fourth proportional to 128,465.70, 192,698.55 and 33,695.70 is: 50,543.55
Step by Step Solution
- Step 1: Write the proportion equation
128,465.70 : 192,698.55 = 33,695.70 : x - Step 2: Convert to fraction form
128,465.70/192,698.55 = 33,695.70/x - Step 3: Cross multiply
128,465.70x = 192,698.55 × 33,695.70 - Step 4: Simplify right side
128,465.70x = 6,493,112,531.24 - Step 5: Solve for x
x = 6,493,112,531.24/128,465.70 - Step 6: Final answer
x = 50,543.55
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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.