Finding the Fourth Proportional to 155,118.62, 214,083.74 and 87,135.62
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Solution
The fourth proportional to 155,118.62, 214,083.74 and 87,135.62 is: 120,258.42
Step by Step Solution
- Step 1: Write the proportion equation
155,118.62 : 214,083.74 = 87,135.62 : x - Step 2: Convert to fraction form
155,118.62/214,083.74 = 87,135.62/x - Step 3: Cross multiply
155,118.62x = 214,083.74 × 87,135.62 - Step 4: Simplify right side
155,118.62x = 18,654,319,416.82 - Step 5: Solve for x
x = 18,654,319,416.82/155,118.62 - Step 6: Final answer
x = 120,258.42
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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.