Finding the Fourth Proportional to 121,609,696.15, 167,821,542.48 and 65,855,212.66
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Solution
The fourth proportional to 121,609,696.15, 167,821,542.48 and 65,855,212.66 is: 90,880,281.09
Step by Step Solution
- Step 1: Write the proportion equation
121,609,696.15 : 167,821,542.48 = 65,855,212.66 : x - Step 2: Convert to fraction form
121,609,696.15/167,821,542.48 = 65,855,212.66/x - Step 3: Cross multiply
121,609,696.15x = 167,821,542.48 × 65,855,212.66 - Step 4: Simplify right side
121,609,696.15x = 11,051,923,368,949,622 - Step 5: Solve for x
x = 11,051,923,368,949,622/121,609,696.15 - Step 6: Final answer
x = 90,880,281.09
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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.