Finding the Fourth Proportional to 175,631.80, 263,447.70 and 128,975.80
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Solution
The fourth proportional to 175,631.80, 263,447.70 and 128,975.80 is: 193,463.70
Step by Step Solution
- Step 1: Write the proportion equation
175,631.80 : 263,447.70 = 128,975.80 : x - Step 2: Convert to fraction form
175,631.80/263,447.70 = 128,975.80/x - Step 3: Cross multiply
175,631.80x = 263,447.70 × 128,975.80 - Step 4: Simplify right side
175,631.80x = 33,978,377,865.66 - Step 5: Solve for x
x = 33,978,377,865.66/175,631.80 - Step 6: Final answer
x = 193,463.70
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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.