Finding the Fourth Proportional to 118,220.70, 177,331.05 and 91,782.30
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Solution
The fourth proportional to 118,220.70, 177,331.05 and 91,782.30 is: 137,673.45
Step by Step Solution
- Step 1: Write the proportion equation
118,220.70 : 177,331.05 = 91,782.30 : x - Step 2: Convert to fraction form
118,220.70/177,331.05 = 91,782.30/x - Step 3: Cross multiply
118,220.70x = 177,331.05 × 91,782.30 - Step 4: Simplify right side
118,220.70x = 16,275,851,630.42 - Step 5: Solve for x
x = 16,275,851,630.42/118,220.70 - Step 6: Final answer
x = 137,673.45
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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.