Finding the Fourth Proportional to 155,116.62, 214,080.99 and 87,133.61
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Solution
The fourth proportional to 155,116.62, 214,080.99 and 87,133.61 is: 120,255.65
Step by Step Solution
- Step 1: Write the proportion equation
155,116.62 : 214,080.99 = 87,133.61 : x - Step 2: Convert to fraction form
155,116.62/214,080.99 = 87,133.61/x - Step 3: Cross multiply
155,116.62x = 214,080.99 × 87,133.61 - Step 4: Simplify right side
155,116.62x = 18,653,649,521.01 - Step 5: Solve for x
x = 18,653,649,521.01/155,116.62 - Step 6: Final answer
x = 120,255.65
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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.