Finding the Fourth Proportional to 155,619.12, 214,736.76 and 87,630.96
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Solution
The fourth proportional to 155,619.12, 214,736.76 and 87,630.96 is: 120,920.80
Step by Step Solution
- Step 1: Write the proportion equation
155,619.12 : 214,736.76 = 87,630.96 : x - Step 2: Convert to fraction form
155,619.12/214,736.76 = 87,630.96/x - Step 3: Cross multiply
155,619.12x = 214,736.76 × 87,630.96 - Step 4: Simplify right side
155,619.12x = 18,817,588,426.09 - Step 5: Solve for x
x = 18,817,588,426.09/155,619.12 - Step 6: Final answer
x = 120,920.80
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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.