Finding the Fourth Proportional to 128,270.26, 176,898.36 and 80,528.06
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Solution
The fourth proportional to 128,270.26, 176,898.36 and 80,528.06 is: 111,056.78
Step by Step Solution
- Step 1: Write the proportion equation
128,270.26 : 176,898.36 = 80,528.06 : x - Step 2: Convert to fraction form
128,270.26/176,898.36 = 80,528.06/x - Step 3: Cross multiply
128,270.26x = 176,898.36 × 80,528.06 - Step 4: Simplify right side
128,270.26x = 14,245,281,747.98 - Step 5: Solve for x
x = 14,245,281,747.98/128,270.26 - Step 6: Final answer
x = 111,056.78
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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.