Finding the Fourth Proportional to 121,881.21, 168,125.58 and 73,450.11
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Solution
The fourth proportional to 121,881.21, 168,125.58 and 73,450.11 is: 101,318.67
Step by Step Solution
- Step 1: Write the proportion equation
121,881.21 : 168,125.58 = 73,450.11 : x - Step 2: Convert to fraction form
121,881.21/168,125.58 = 73,450.11/x - Step 3: Cross multiply
121,881.21x = 168,125.58 × 73,450.11 - Step 4: Simplify right side
121,881.21x = 12,348,842,344.81 - Step 5: Solve for x
x = 12,348,842,344.81/121,881.21 - Step 6: Final answer
x = 101,318.67
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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.