Finding the Fourth Proportional to 128,121,705.95, 192,215,331.09 and 37,245,294.95
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Solution
The fourth proportional to 128,121,705.95, 192,215,331.09 and 37,245,294.95 is: 55,877,469.37
Step by Step Solution
- Step 1: Write the proportion equation
128,121,705.95 : 192,215,331.09 = 37,245,294.95 : x - Step 2: Convert to fraction form
128,121,705.95/192,215,331.09 = 37,245,294.95/x - Step 3: Cross multiply
128,121,705.95x = 192,215,331.09 × 37,245,294.95 - Step 4: Simplify right side
128,121,705.95x = 7,159,116,699,397,879 - Step 5: Solve for x
x = 7,159,116,699,397,879/128,121,705.95 - Step 6: Final answer
x = 55,877,469.37
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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.