Finding the Fourth Proportional to 137,781,015.30, 206,689,237.65 and 68,729,114.70
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Solution
The fourth proportional to 137,781,015.30, 206,689,237.65 and 68,729,114.70 is: 103,102,508.65
Step by Step Solution
- Step 1: Write the proportion equation
137,781,015.30 : 206,689,237.65 = 68,729,114.70 : x - Step 2: Convert to fraction form
137,781,015.30/206,689,237.65 = 68,729,114.70/x - Step 3: Cross multiply
137,781,015.30x = 206,689,237.65 × 68,729,114.70 - Step 4: Simplify right side
137,781,015.30x = 14,205,568,321,702,410 - Step 5: Solve for x
x = 14,205,568,321,702,410/137,781,015.30 - Step 6: Final answer
x = 103,102,508.65
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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.