Finding the Fourth Proportional to 115,577.62, 158,884.74 and 99,385.63
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Solution
The fourth proportional to 115,577.62, 158,884.74 and 99,385.63 is: 136,625.59
Step by Step Solution
- Step 1: Write the proportion equation
115,577.62 : 158,884.74 = 99,385.63 : x - Step 2: Convert to fraction form
115,577.62/158,884.74 = 99,385.63/x - Step 3: Cross multiply
115,577.62x = 158,884.74 × 99,385.63 - Step 4: Simplify right side
115,577.62x = 15,790,859,982.29 - Step 5: Solve for x
x = 15,790,859,982.29/115,577.62 - Step 6: Final answer
x = 136,625.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.