Finding the Fourth Proportional to 138,331.24, 190,495.11 and 120,173.67
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Solution
The fourth proportional to 138,331.24, 190,495.11 and 120,173.67 is: 165,490.43
Step by Step Solution
- Step 1: Write the proportion equation
138,331.24 : 190,495.11 = 120,173.67 : x - Step 2: Convert to fraction form
138,331.24/190,495.11 = 120,173.67/x - Step 3: Cross multiply
138,331.24x = 190,495.11 × 120,173.67 - Step 4: Simplify right side
138,331.24x = 22,892,496,485.75 - Step 5: Solve for x
x = 22,892,496,485.75/138,331.24 - Step 6: Final answer
x = 165,490.43
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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.