Finding the Fourth Proportional to 128,661.12, 192,991.68 and 35,167.68
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Solution
The fourth proportional to 128,661.12, 192,991.68 and 35,167.68 is: 52,751.52
Step by Step Solution
- Step 1: Write the proportion equation
128,661.12 : 192,991.68 = 35,167.68 : x - Step 2: Convert to fraction form
128,661.12/192,991.68 = 35,167.68/x - Step 3: Cross multiply
128,661.12x = 192,991.68 × 35,167.68 - Step 4: Simplify right side
128,661.12x = 6,787,069,644.90 - Step 5: Solve for x
x = 6,787,069,644.90/128,661.12 - Step 6: Final answer
x = 52,751.52
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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.