Finding the Fourth Proportional to 128,110,475.80, 192,165,713.70 and 122,158,336.60
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Solution
The fourth proportional to 128,110,475.80, 192,165,713.70 and 122,158,336.60 is: 183,237,504.90
Step by Step Solution
- Step 1: Write the proportion equation
128,110,475.80 : 192,165,713.70 = 122,158,336.60 : x - Step 2: Convert to fraction form
128,110,475.80/192,165,713.70 = 122,158,336.60/x - Step 3: Cross multiply
128,110,475.80x = 192,165,713.70 × 122,158,336.60 - Step 4: Simplify right side
128,110,475.80x = 23,474,643,937,143,828 - Step 5: Solve for x
x = 23,474,643,937,143,828/128,110,475.80 - Step 6: Final answer
x = 183,237,504.90
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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.