Finding the Fourth Proportional to 129,446,901.40, 194,170,352.10 and 118,361,435.80
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Solution
The fourth proportional to 129,446,901.40, 194,170,352.10 and 118,361,435.80 is: 177,542,153.70
Step by Step Solution
- Step 1: Write the proportion equation
129,446,901.40 : 194,170,352.10 = 118,361,435.80 : x - Step 2: Convert to fraction form
129,446,901.40/194,170,352.10 = 118,361,435.80/x - Step 3: Cross multiply
129,446,901.40x = 194,170,352.10 × 118,361,435.80 - Step 4: Simplify right side
129,446,901.40x = 22,982,281,664,347,544 - Step 5: Solve for x
x = 22,982,281,664,347,544/129,446,901.40 - Step 6: Final answer
x = 177,542,153.70
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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.