Finding the Fourth Proportional to 128,292.32, 176,928.68 and 80,550.08
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Solution
The fourth proportional to 128,292.32, 176,928.68 and 80,550.08 is: 111,087.08
Step by Step Solution
- Step 1: Write the proportion equation
128,292.32 : 176,928.68 = 80,550.08 : x - Step 2: Convert to fraction form
128,292.32/176,928.68 = 80,550.08/x - Step 3: Cross multiply
128,292.32x = 176,928.68 × 80,550.08 - Step 4: Simplify right side
128,292.32x = 14,251,619,328.29 - Step 5: Solve for x
x = 14,251,619,328.29/128,292.32 - Step 6: Final answer
x = 111,087.08
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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.