Finding the Fourth Proportional to 121,874,364.48, 168,186,942.37 and 66,119,782.01
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Solution
The fourth proportional to 121,874,364.48, 168,186,942.37 and 66,119,782.01 is: 91,245,472.44
Step by Step Solution
- Step 1: Write the proportion equation
121,874,364.48 : 168,186,942.37 = 66,119,782.01 : x - Step 2: Convert to fraction form
121,874,364.48/168,186,942.37 = 66,119,782.01/x - Step 3: Cross multiply
121,874,364.48x = 168,186,942.37 × 66,119,782.01 - Step 4: Simplify right side
121,874,364.48x = 11,120,483,965,674,548 - Step 5: Solve for x
x = 11,120,483,965,674,548/121,874,364.48 - Step 6: Final answer
x = 91,245,472.44
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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.