Finding the Fourth Proportional to 121,874,361.09, 168,186,937.70 and 66,119,778.61
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Solution
The fourth proportional to 121,874,361.09, 168,186,937.70 and 66,119,778.61 is: 91,245,467.76
Step by Step Solution
- Step 1: Write the proportion equation
121,874,361.09 : 168,186,937.70 = 66,119,778.61 : x - Step 2: Convert to fraction form
121,874,361.09/168,186,937.70 = 66,119,778.61/x - Step 3: Cross multiply
121,874,361.09x = 168,186,937.70 × 66,119,778.61 - Step 4: Simplify right side
121,874,361.09x = 11,120,483,086,136,492 - Step 5: Solve for x
x = 11,120,483,086,136,492/121,874,361.09 - Step 6: Final answer
x = 91,245,467.76
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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.