Finding the Fourth Proportional to 126,356.05, 174,441.40 and 86,128.92
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Solution
The fourth proportional to 126,356.05, 174,441.40 and 86,128.92 is: 118,905.66
Step by Step Solution
- Step 1: Write the proportion equation
126,356.05 : 174,441.40 = 86,128.92 : x - Step 2: Convert to fraction form
126,356.05/174,441.40 = 86,128.92/x - Step 3: Cross multiply
126,356.05x = 174,441.40 × 86,128.92 - Step 4: Simplify right side
126,356.05x = 15,024,449,169.97 - Step 5: Solve for x
x = 15,024,449,169.97/126,356.05 - Step 6: Final answer
x = 118,905.66
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1.5x scale
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.