Finding the Fourth Proportional to 121,874,366.14, 168,186,944.70 and 66,119,783.69
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Solution
The fourth proportional to 121,874,366.14, 168,186,944.70 and 66,119,783.69 is: 91,245,474.79
Step by Step Solution
- Step 1: Write the proportion equation
121,874,366.14 : 168,186,944.70 = 66,119,783.69 : x - Step 2: Convert to fraction form
121,874,366.14/168,186,944.70 = 66,119,783.69/x - Step 3: Cross multiply
121,874,366.14x = 168,186,944.70 × 66,119,783.69 - Step 4: Simplify right side
121,874,366.14x = 11,120,484,403,466,458 - Step 5: Solve for x
x = 11,120,484,403,466,458/121,874,366.14 - Step 6: Final answer
x = 91,245,474.79
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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.