Finding the Fourth Proportional to 121,874,367.05, 168,186,945.91 and 66,119,784.57
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Solution
The fourth proportional to 121,874,367.05, 168,186,945.91 and 66,119,784.57 is: 91,245,475.98
Step by Step Solution
- Step 1: Write the proportion equation
121,874,367.05 : 168,186,945.91 = 66,119,784.57 : x - Step 2: Convert to fraction form
121,874,367.05/168,186,945.91 = 66,119,784.57/x - Step 3: Cross multiply
121,874,367.05x = 168,186,945.91 × 66,119,784.57 - Step 4: Simplify right side
121,874,367.05x = 11,120,484,631,055,442 - Step 5: Solve for x
x = 11,120,484,631,055,442/121,874,367.05 - Step 6: Final answer
x = 91,245,475.98
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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.