Finding the Fourth Proportional to 198,153,025.80, 297,229,538.70 and 68,747,142.30
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Solution
The fourth proportional to 198,153,025.80, 297,229,538.70 and 68,747,142.30 is: 103,120,713.45
Step by Step Solution
- Step 1: Write the proportion equation
198,153,025.80 : 297,229,538.70 = 68,747,142.30 : x - Step 2: Convert to fraction form
198,153,025.80/297,229,538.70 = 68,747,142.30/x - Step 3: Cross multiply
198,153,025.80x = 297,229,538.70 × 68,747,142.30 - Step 4: Simplify right side
198,153,025.80x = 20,433,681,392,772,256 - Step 5: Solve for x
x = 20,433,681,392,772,256/198,153,025.80 - Step 6: Final answer
x = 103,120,713.45
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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.