Finding the Fourth Proportional to 112,169.64, 154,755.36 and 71,905.62
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Solution
The fourth proportional to 112,169.64, 154,755.36 and 71,905.62 is: 99,204.92
Step by Step Solution
- Step 1: Write the proportion equation
112,169.64 : 154,755.36 = 71,905.62 : x - Step 2: Convert to fraction form
112,169.64/154,755.36 = 71,905.62/x - Step 3: Cross multiply
112,169.64x = 154,755.36 × 71,905.62 - Step 4: Simplify right side
112,169.64x = 11,127,780,109.12 - Step 5: Solve for x
x = 11,127,780,109.12/112,169.64 - Step 6: Final answer
x = 99,204.92
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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.