Finding the Fourth Proportional to 128,735.68, 193,164.96 and 45,668.80
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Solution
The fourth proportional to 128,735.68, 193,164.96 and 45,668.80 is: 68,525.00
Step by Step Solution
- Step 1: Write the proportion equation
128,735.68 : 193,164.96 = 45,668.80 : x - Step 2: Convert to fraction form
128,735.68/193,164.96 = 45,668.80/x - Step 3: Cross multiply
128,735.68x = 193,164.96 × 45,668.80 - Step 4: Simplify right side
128,735.68x = 8,821,611,925.25 - Step 5: Solve for x
x = 8,821,611,925.25/128,735.68 - Step 6: Final answer
x = 68,525.00
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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.