Finding the Fourth Proportional to 118,842.12, 164,003.42 and 65,125.99
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Solution
The fourth proportional to 118,842.12, 164,003.42 and 65,125.99 is: 89,874.57
Step by Step Solution
- Step 1: Write the proportion equation
118,842.12 : 164,003.42 = 65,125.99 : x - Step 2: Convert to fraction form
118,842.12/164,003.42 = 65,125.99/x - Step 3: Cross multiply
118,842.12x = 164,003.42 × 65,125.99 - Step 4: Simplify right side
118,842.12x = 10,680,884,270.87 - Step 5: Solve for x
x = 10,680,884,270.87/118,842.12 - Step 6: Final answer
x = 89,874.57
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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.