Finding the Fourth Proportional to 155,354.81, 214,387.59 and 87,371.76
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Solution
The fourth proportional to 155,354.81, 214,387.59 and 87,371.76 is: 120,571.88
Step by Step Solution
- Step 1: Write the proportion equation
155,354.81 : 214,387.59 = 87,371.76 : x - Step 2: Convert to fraction form
155,354.81/214,387.59 = 87,371.76/x - Step 3: Cross multiply
155,354.81x = 214,387.59 × 87,371.76 - Step 4: Simplify right side
155,354.81x = 18,731,420,584.15 - Step 5: Solve for x
x = 18,731,420,584.15/155,354.81 - Step 6: Final answer
x = 120,571.88
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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.