Finding the Fourth Proportional to 157,907.08, 217,913.70 and 86,287.96
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Solution
The fourth proportional to 157,907.08, 217,913.70 and 86,287.96 is: 119,078.44
Step by Step Solution
- Step 1: Write the proportion equation
157,907.08 : 217,913.70 = 86,287.96 : x - Step 2: Convert to fraction form
157,907.08/217,913.70 = 86,287.96/x - Step 3: Cross multiply
157,907.08x = 217,913.70 × 86,287.96 - Step 4: Simplify right side
157,907.08x = 18,803,328,629.05 - Step 5: Solve for x
x = 18,803,328,629.05/157,907.08 - Step 6: Final answer
x = 119,078.44
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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.