Finding the Fourth Proportional to 155,629.48, 214,744.98 and 87,642.88
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Solution
The fourth proportional to 155,629.48, 214,744.98 and 87,642.88 is: 120,933.83
Step by Step Solution
- Step 1: Write the proportion equation
155,629.48 : 214,744.98 = 87,642.88 : x - Step 2: Convert to fraction form
155,629.48/214,744.98 = 87,642.88/x - Step 3: Cross multiply
155,629.48x = 214,744.98 × 87,642.88 - Step 4: Simplify right side
155,629.48x = 18,820,868,512.74 - Step 5: Solve for x
x = 18,820,868,512.74/155,629.48 - Step 6: Final answer
x = 120,933.83
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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.