Finding the Fourth Proportional to 121,184,812.80, 167,236,371.36 and 66,182,287.68
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Solution
The fourth proportional to 121,184,812.80, 167,236,371.36 and 66,182,287.68 is: 91,332,283.18
Step by Step Solution
- Step 1: Write the proportion equation
121,184,812.80 : 167,236,371.36 = 66,182,287.68 : x - Step 2: Convert to fraction form
121,184,812.80/167,236,371.36 = 66,182,287.68/x - Step 3: Cross multiply
121,184,812.80x = 167,236,371.36 × 66,182,287.68 - Step 4: Simplify right side
121,184,812.80x = 11,068,085,639,906,834 - Step 5: Solve for x
x = 11,068,085,639,906,834/121,184,812.80 - Step 6: Final answer
x = 91,332,283.18
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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.