Finding the Fourth Proportional to 121,018,348.80, 181,503,903.60 and 40,239,316.80
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Solution
The fourth proportional to 121,018,348.80, 181,503,903.60 and 40,239,316.80 is: 60,351,121.54
Step by Step Solution
- Step 1: Write the proportion equation
121,018,348.80 : 181,503,903.60 = 40,239,316.80 : x - Step 2: Convert to fraction form
121,018,348.80/181,503,903.60 = 40,239,316.80/x - Step 3: Cross multiply
121,018,348.80x = 181,503,903.60 × 40,239,316.80 - Step 4: Simplify right side
121,018,348.80x = 7,303,593,077,397,060 - Step 5: Solve for x
x = 7,303,593,077,397,060/121,018,348.80 - Step 6: Final answer
x = 60,351,121.54
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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.