Finding the Fourth Proportional to 128,230.11, 192,288.69 and 68,244.12
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Solution
The fourth proportional to 128,230.11, 192,288.69 and 68,244.12 is: 102,336.12
Step by Step Solution
- Step 1: Write the proportion equation
128,230.11 : 192,288.69 = 68,244.12 : x - Step 2: Convert to fraction form
128,230.11/192,288.69 = 68,244.12/x - Step 3: Cross multiply
128,230.11x = 192,288.69 × 68,244.12 - Step 4: Simplify right side
128,230.11x = 13,122,572,482.99 - Step 5: Solve for x
x = 13,122,572,482.99/128,230.11 - Step 6: Final answer
x = 102,336.12
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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.