Finding the Fourth Proportional to 118,212.40, 177,334.80 and 39,318.40
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Solution
The fourth proportional to 118,212.40, 177,334.80 and 39,318.40 is: 58,982.99
Step by Step Solution
- Step 1: Write the proportion equation
118,212.40 : 177,334.80 = 39,318.40 : x - Step 2: Convert to fraction form
118,212.40/177,334.80 = 39,318.40/x - Step 3: Cross multiply
118,212.40x = 177,334.80 × 39,318.40 - Step 4: Simplify right side
118,212.40x = 6,972,520,600.32 - Step 5: Solve for x
x = 6,972,520,600.32/118,212.40 - Step 6: Final answer
x = 58,982.99
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1.5x scale
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.