Finding the Fourth Proportional to 120,068,645.81, 180,101,071.49 and 38,186,343.38
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Solution
The fourth proportional to 120,068,645.81, 180,101,071.49 and 38,186,343.38 is: 57,278,911.69
Step by Step Solution
- Step 1: Write the proportion equation
120,068,645.81 : 180,101,071.49 = 38,186,343.38 : x - Step 2: Convert to fraction form
120,068,645.81/180,101,071.49 = 38,186,343.38/x - Step 3: Cross multiply
120,068,645.81x = 180,101,071.49 × 38,186,343.38 - Step 4: Simplify right side
120,068,645.81x = 6,877,401,359,282,390 - Step 5: Solve for x
x = 6,877,401,359,282,390/120,068,645.81 - Step 6: Final answer
x = 57,278,911.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.