Finding the Fourth Proportional to 121,991,982.88, 168,351,861.50 and 66,239,752.94
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Solution
The fourth proportional to 121,991,982.88, 168,351,861.50 and 66,239,752.94 is: 91,412,447.35
Step by Step Solution
- Step 1: Write the proportion equation
121,991,982.88 : 168,351,861.50 = 66,239,752.94 : x - Step 2: Convert to fraction form
121,991,982.88/168,351,861.50 = 66,239,752.94/x - Step 3: Cross multiply
121,991,982.88x = 168,351,861.50 × 66,239,752.94 - Step 4: Simplify right side
121,991,982.88x = 11,151,585,712,749,098 - Step 5: Solve for x
x = 11,151,585,712,749,098/121,991,982.88 - Step 6: Final answer
x = 91,412,447.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.