Finding the Fourth Proportional to 128,506,877.92, 192,836,908.79 and 46,632,143.40
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Solution
The fourth proportional to 128,506,877.92, 192,836,908.79 and 46,632,143.40 is: 69,976,008.51
Step by Step Solution
- Step 1: Write the proportion equation
128,506,877.92 : 192,836,908.79 = 46,632,143.40 : x - Step 2: Convert to fraction form
128,506,877.92/192,836,908.79 = 46,632,143.40/x - Step 3: Cross multiply
128,506,877.92x = 192,836,908.79 × 46,632,143.40 - Step 4: Simplify right side
128,506,877.92x = 8,992,398,383,508,000 - Step 5: Solve for x
x = 8,992,398,383,508,000/128,506,877.92 - Step 6: Final answer
x = 69,976,008.51
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.