Finding the Fourth Proportional to 121,508,615.81, 167,663,851.68 and 73,799,043.02
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Solution
The fourth proportional to 121,508,615.81, 167,663,851.68 and 73,799,043.02 is: 101,831,723.79
Step by Step Solution
- Step 1: Write the proportion equation
121,508,615.81 : 167,663,851.68 = 73,799,043.02 : x - Step 2: Convert to fraction form
121,508,615.81/167,663,851.68 = 73,799,043.02/x - Step 3: Cross multiply
121,508,615.81x = 167,663,851.68 × 73,799,043.02 - Step 4: Simplify right side
121,508,615.81x = 12,373,431,802,192,900 - Step 5: Solve for x
x = 12,373,431,802,192,900/121,508,615.81 - Step 6: Final answer
x = 101,831,723.79
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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.