Finding the Fourth Proportional to 121,737,883.92, 167,980,343.04 and 74,028,799.68
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Solution
The fourth proportional to 121,737,883.92, 167,980,343.04 and 74,028,799.68 is: 102,148,836.21
Step by Step Solution
- Step 1: Write the proportion equation
121,737,883.92 : 167,980,343.04 = 74,028,799.68 : x - Step 2: Convert to fraction form
121,737,883.92/167,980,343.04 = 74,028,799.68/x - Step 3: Cross multiply
121,737,883.92x = 167,980,343.04 × 74,028,799.68 - Step 4: Simplify right side
121,737,883.92x = 12,435,383,165,085,842 - Step 5: Solve for x
x = 12,435,383,165,085,842/121,737,883.92 - Step 6: Final answer
x = 102,148,836.21
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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.