Finding the Fourth Proportional to 121,512,767.94, 167,688,130.79 and 65,758,190.97
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Solution
The fourth proportional to 121,512,767.94, 167,688,130.79 and 65,758,190.97 is: 90,746,580.09
Step by Step Solution
- Step 1: Write the proportion equation
121,512,767.94 : 167,688,130.79 = 65,758,190.97 : x - Step 2: Convert to fraction form
121,512,767.94/167,688,130.79 = 65,758,190.97/x - Step 3: Cross multiply
121,512,767.94x = 167,688,130.79 × 65,758,190.97 - Step 4: Simplify right side
121,512,767.94x = 11,026,868,127,891,156 - Step 5: Solve for x
x = 11,026,868,127,891,156/121,512,767.94 - Step 6: Final answer
x = 90,746,580.09
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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.