Finding the Fourth Proportional to 117,135.03, 161,490.01 and 87,939.80
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Solution
The fourth proportional to 117,135.03, 161,490.01 and 87,939.80 is: 121,239.56
Step by Step Solution
- Step 1: Write the proportion equation
117,135.03 : 161,490.01 = 87,939.80 : x - Step 2: Convert to fraction form
117,135.03/161,490.01 = 87,939.80/x - Step 3: Cross multiply
117,135.03x = 161,490.01 × 87,939.80 - Step 4: Simplify right side
117,135.03x = 14,201,399,181.40 - Step 5: Solve for x
x = 14,201,399,181.40/117,135.03 - Step 6: Final answer
x = 121,239.56
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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.