Finding the Fourth Proportional to 121,205,478.79, 167,264,071.53 and 68,282,821.42
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Solution
The fourth proportional to 121,205,478.79, 167,264,071.53 and 68,282,821.42 is: 94,230,581.33
Step by Step Solution
- Step 1: Write the proportion equation
121,205,478.79 : 167,264,071.53 = 68,282,821.42 : x - Step 2: Convert to fraction form
121,205,478.79/167,264,071.53 = 68,282,821.42/x - Step 3: Cross multiply
121,205,478.79x = 167,264,071.53 × 68,282,821.42 - Step 4: Simplify right side
121,205,478.79x = 11,421,262,726,265,096 - Step 5: Solve for x
x = 11,421,262,726,265,096/121,205,478.79 - Step 6: Final answer
x = 94,230,581.33
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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.