Finding the Fourth Proportional to 128,112,091.36, 192,128,392.74 and 46,220,324.08
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Solution
The fourth proportional to 128,112,091.36, 192,128,392.74 and 46,220,324.08 is: 69,316,147.16
Step by Step Solution
- Step 1: Write the proportion equation
128,112,091.36 : 192,128,392.74 = 46,220,324.08 : x - Step 2: Convert to fraction form
128,112,091.36/192,128,392.74 = 46,220,324.08/x - Step 3: Cross multiply
128,112,091.36x = 192,128,392.74 × 46,220,324.08 - Step 4: Simplify right side
128,112,091.36x = 8,880,236,577,412,319 - Step 5: Solve for x
x = 8,880,236,577,412,319/128,112,091.36 - Step 6: Final answer
x = 69,316,147.16
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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.