Finding the Fourth Proportional to 128,214.40, 192,066.88 and 100,382.08
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Solution
The fourth proportional to 128,214.40, 192,066.88 and 100,382.08 is: 150,373.69
Step by Step Solution
- Step 1: Write the proportion equation
128,214.40 : 192,066.88 = 100,382.08 : x - Step 2: Convert to fraction form
128,214.40/192,066.88 = 100,382.08/x - Step 3: Cross multiply
128,214.40x = 192,066.88 × 100,382.08 - Step 4: Simplify right side
128,214.40x = 19,280,072,913.51 - Step 5: Solve for x
x = 19,280,072,913.51/128,214.40 - Step 6: Final answer
x = 150,373.69
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.