Finding the Fourth Proportional to 147,021.38, 202,951.42 and 99,339.31
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Solution
The fourth proportional to 147,021.38, 202,951.42 and 99,339.31 is: 137,130.09
Step by Step Solution
- Step 1: Write the proportion equation
147,021.38 : 202,951.42 = 99,339.31 : x - Step 2: Convert to fraction form
147,021.38/202,951.42 = 99,339.31/x - Step 3: Cross multiply
147,021.38x = 202,951.42 × 99,339.31 - Step 4: Simplify right side
147,021.38x = 20,161,054,590.44 - Step 5: Solve for x
x = 20,161,054,590.44/147,021.38 - Step 6: Final answer
x = 137,130.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.