Finding the Fourth Proportional to 128,129,140.12, 192,226,449.57 and 37,252,729.12
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Solution
The fourth proportional to 128,129,140.12, 192,226,449.57 and 37,252,729.12 is: 55,888,612.45
Step by Step Solution
- Step 1: Write the proportion equation
128,129,140.12 : 192,226,449.57 = 37,252,729.12 : x - Step 2: Convert to fraction form
128,129,140.12/192,226,449.57 = 37,252,729.12/x - Step 3: Cross multiply
128,129,140.12x = 192,226,449.57 × 37,252,729.12 - Step 4: Simplify right side
128,129,140.12x = 7,160,959,855,530,550 - Step 5: Solve for x
x = 7,160,959,855,530,550/128,129,140.12 - Step 6: Final answer
x = 55,888,612.45
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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.