Finding the Fourth Proportional to 128,190.54, 176,951.60 and 96,451.70
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Solution
The fourth proportional to 128,190.54, 176,951.60 and 96,451.70 is: 133,139.95
Step by Step Solution
- Step 1: Write the proportion equation
128,190.54 : 176,951.60 = 96,451.70 : x - Step 2: Convert to fraction form
128,190.54/176,951.60 = 96,451.70/x - Step 3: Cross multiply
128,190.54x = 176,951.60 × 96,451.70 - Step 4: Simplify right side
128,190.54x = 17,067,282,637.72 - Step 5: Solve for x
x = 17,067,282,637.72/128,190.54 - Step 6: Final answer
x = 133,139.95
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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.