Finding the Fourth Proportional to 128,084.26, 176,793.81 and 74,393.41
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Solution
The fourth proportional to 128,084.26, 176,793.81 and 74,393.41 is: 102,684.70
Step by Step Solution
- Step 1: Write the proportion equation
128,084.26 : 176,793.81 = 74,393.41 : x - Step 2: Convert to fraction form
128,084.26/176,793.81 = 74,393.41/x - Step 3: Cross multiply
128,084.26x = 176,793.81 × 74,393.41 - Step 4: Simplify right side
128,084.26x = 13,152,293,508.82 - Step 5: Solve for x
x = 13,152,293,508.82/128,084.26 - Step 6: Final answer
x = 102,684.70
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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.