Finding the Fourth Proportional to 129,030,135.20, 193,545,202.80 and 57,366,519.20
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Solution
The fourth proportional to 129,030,135.20, 193,545,202.80 and 57,366,519.20 is: 86,049,778.80
Step by Step Solution
- Step 1: Write the proportion equation
129,030,135.20 : 193,545,202.80 = 57,366,519.20 : x - Step 2: Convert to fraction form
129,030,135.20/193,545,202.80 = 57,366,519.20/x - Step 3: Cross multiply
129,030,135.20x = 193,545,202.80 × 57,366,519.20 - Step 4: Simplify right side
129,030,135.20x = 11,103,014,592,494,096 - Step 5: Solve for x
x = 11,103,014,592,494,096/129,030,135.20 - Step 6: Final answer
x = 86,049,778.80
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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.