Finding the Fourth Proportional to 155,783.10, 214,980.76 and 84,163.08
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Solution
The fourth proportional to 155,783.10, 214,980.76 and 84,163.08 is: 116,145.09
Step by Step Solution
- Step 1: Write the proportion equation
155,783.10 : 214,980.76 = 84,163.08 : x - Step 2: Convert to fraction form
155,783.10/214,980.76 = 84,163.08/x - Step 3: Cross multiply
155,783.10x = 214,980.76 × 84,163.08 - Step 4: Simplify right side
155,783.10x = 18,093,442,902.34 - Step 5: Solve for x
x = 18,093,442,902.34/155,783.10 - Step 6: Final answer
x = 116,145.09
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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.