Finding the Fourth Proportional to 128,330,332.48, 177,097,222.56 and 69,593,112.64
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Solution
The fourth proportional to 128,330,332.48, 177,097,222.56 and 69,593,112.64 is: 96,039,234.99
Step by Step Solution
- Step 1: Write the proportion equation
128,330,332.48 : 177,097,222.56 = 69,593,112.64 : x - Step 2: Convert to fraction form
128,330,332.48/177,097,222.56 = 69,593,112.64/x - Step 3: Cross multiply
128,330,332.48x = 177,097,222.56 × 69,593,112.64 - Step 4: Simplify right side
128,330,332.48x = 12,324,746,957,849,230 - Step 5: Solve for x
x = 12,324,746,957,849,230/128,330,332.48 - Step 6: Final answer
x = 96,039,234.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.