Finding the Fourth Proportional to 138,725,932.20, 208,025,912.70 and 52,435,660.20
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Solution
The fourth proportional to 138,725,932.20, 208,025,912.70 and 52,435,660.20 is: 78,629,682.99
Step by Step Solution
- Step 1: Write the proportion equation
138,725,932.20 : 208,025,912.70 = 52,435,660.20 : x - Step 2: Convert to fraction form
138,725,932.20/208,025,912.70 = 52,435,660.20/x - Step 3: Cross multiply
138,725,932.20x = 208,025,912.70 × 52,435,660.20 - Step 4: Simplify right side
138,725,932.20x = 10,907,976,071,132,064 - Step 5: Solve for x
x = 10,907,976,071,132,064/138,725,932.20 - Step 6: Final answer
x = 78,629,682.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.