Finding the Fourth Proportional to 128,240.69, 192,193.36 and 68,948.69
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Solution
The fourth proportional to 128,240.69, 192,193.36 and 68,948.69 is: 103,332.88
Step by Step Solution
- Step 1: Write the proportion equation
128,240.69 : 192,193.36 = 68,948.69 : x - Step 2: Convert to fraction form
128,240.69/192,193.36 = 68,948.69/x - Step 3: Cross multiply
128,240.69x = 192,193.36 × 68,948.69 - Step 4: Simplify right side
128,240.69x = 13,251,479,265.36 - Step 5: Solve for x
x = 13,251,479,265.36/128,240.69 - Step 6: Final answer
x = 103,332.88
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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.