Finding the Fourth Proportional to 196,121.76, 270,705.16 and 128,149.08
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Solution
The fourth proportional to 196,121.76, 270,705.16 and 128,149.08 is: 176,883.06
Step by Step Solution
- Step 1: Write the proportion equation
196,121.76 : 270,705.16 = 128,149.08 : x - Step 2: Convert to fraction form
196,121.76/270,705.16 = 128,149.08/x - Step 3: Cross multiply
196,121.76x = 270,705.16 × 128,149.08 - Step 4: Simplify right side
196,121.76x = 34,690,617,205.25 - Step 5: Solve for x
x = 34,690,617,205.25/196,121.76 - Step 6: Final answer
x = 176,883.06
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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.