Finding the Fourth Proportional to 129,310,315.20, 193,965,472.80 and 122,933,023.20
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Solution
The fourth proportional to 129,310,315.20, 193,965,472.80 and 122,933,023.20 is: 184,399,534.80
Step by Step Solution
- Step 1: Write the proportion equation
129,310,315.20 : 193,965,472.80 = 122,933,023.20 : x - Step 2: Convert to fraction form
129,310,315.20/193,965,472.80 = 122,933,023.20/x - Step 3: Cross multiply
129,310,315.20x = 193,965,472.80 × 122,933,023.20 - Step 4: Simplify right side
129,310,315.20x = 23,844,761,967,721,372 - Step 5: Solve for x
x = 23,844,761,967,721,372/129,310,315.20 - Step 6: Final answer
x = 184,399,534.80
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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.