Finding the Fourth Proportional to 121,905.24, 168,161.49 and 70,912.23
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Solution
The fourth proportional to 121,905.24, 168,161.49 and 70,912.23 is: 97,819.47
Step by Step Solution
- Step 1: Write the proportion equation
121,905.24 : 168,161.49 = 70,912.23 : x - Step 2: Convert to fraction form
121,905.24/168,161.49 = 70,912.23/x - Step 3: Cross multiply
121,905.24x = 168,161.49 × 70,912.23 - Step 4: Simplify right side
121,905.24x = 11,924,706,256.02 - Step 5: Solve for x
x = 11,924,706,256.02/121,905.24 - Step 6: Final answer
x = 97,819.47
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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.