Finding the Fourth Proportional to 128,202,879.60, 192,304,319.40 and 37,329,433.20
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Solution
The fourth proportional to 128,202,879.60, 192,304,319.40 and 37,329,433.20 is: 55,994,149.80
Step by Step Solution
- Step 1: Write the proportion equation
128,202,879.60 : 192,304,319.40 = 37,329,433.20 : x - Step 2: Convert to fraction form
128,202,879.60/192,304,319.40 = 37,329,433.20/x - Step 3: Cross multiply
128,202,879.60x = 192,304,319.40 × 37,329,433.20 - Step 4: Simplify right side
128,202,879.60x = 7,178,611,245,113,765 - Step 5: Solve for x
x = 7,178,611,245,113,765/128,202,879.60 - Step 6: Final answer
x = 55,994,149.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.