Finding the Fourth Proportional to 155,115.42, 214,051.05 and 87,135.26
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Solution
The fourth proportional to 155,115.42, 214,051.05 and 87,135.26 is: 120,242.03
Step by Step Solution
- Step 1: Write the proportion equation
155,115.42 : 214,051.05 = 87,135.26 : x - Step 2: Convert to fraction form
155,115.42/214,051.05 = 87,135.26/x - Step 3: Cross multiply
155,115.42x = 214,051.05 × 87,135.26 - Step 4: Simplify right side
155,115.42x = 18,651,392,824.77 - Step 5: Solve for x
x = 18,651,392,824.77/155,115.42 - Step 6: Final answer
x = 120,242.03
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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.