Finding the Fourth Proportional to 84,129,927.20, 126,194,890.80 and 84,129,927.20
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Solution
The fourth proportional to 84,129,927.20, 126,194,890.80 and 84,129,927.20 is: 126,194,890.80
Step by Step Solution
- Step 1: Write the proportion equation
84,129,927.20 : 126,194,890.80 = 84,129,927.20 : x - Step 2: Convert to fraction form
84,129,927.20/126,194,890.80 = 84,129,927.20/x - Step 3: Cross multiply
84,129,927.20x = 126,194,890.80 × 84,129,927.20 - Step 4: Simplify right side
84,129,927.20x = 10,616,766,976,015,950 - Step 5: Solve for x
x = 10,616,766,976,015,950/84,129,927.20 - Step 6: Final answer
x = 126,194,890.80
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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.