Finding the Fourth Proportional to 121,738,335.08, 167,980,961.40 and 74,029,250.84
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Solution
The fourth proportional to 121,738,335.08, 167,980,961.40 and 74,029,250.84 is: 102,149,456.21
Step by Step Solution
- Step 1: Write the proportion equation
121,738,335.08 : 167,980,961.40 = 74,029,250.84 : x - Step 2: Convert to fraction form
121,738,335.08/167,980,961.40 = 74,029,250.84/x - Step 3: Cross multiply
121,738,335.08x = 167,980,961.40 × 74,029,250.84 - Step 4: Simplify right side
121,738,335.08x = 12,435,504,727,824,958 - Step 5: Solve for x
x = 12,435,504,727,824,958/121,738,335.08 - Step 6: Final answer
x = 102,149,456.21
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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.