Finding the Fourth Proportional to 129,650,204.21, 178,923,013.49 and 74,663,775.41
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Solution
The fourth proportional to 129,650,204.21, 178,923,013.49 and 74,663,775.41 is: 103,039,310.86
Step by Step Solution
- Step 1: Write the proportion equation
129,650,204.21 : 178,923,013.49 = 74,663,775.41 : x - Step 2: Convert to fraction form
129,650,204.21/178,923,013.49 = 74,663,775.41/x - Step 3: Cross multiply
129,650,204.21x = 178,923,013.49 × 74,663,775.41 - Step 4: Simplify right side
129,650,204.21x = 13,359,067,694,189,806 - Step 5: Solve for x
x = 13,359,067,694,189,806/129,650,204.21 - Step 6: Final answer
x = 103,039,310.86
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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.