Finding the Fourth Proportional to 153,690.75, 212,094.86 and 86,622.75
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Solution
The fourth proportional to 153,690.75, 212,094.86 and 86,622.75 is: 119,540.31
Step by Step Solution
- Step 1: Write the proportion equation
153,690.75 : 212,094.86 = 86,622.75 : x - Step 2: Convert to fraction form
153,690.75/212,094.86 = 86,622.75/x - Step 3: Cross multiply
153,690.75x = 212,094.86 × 86,622.75 - Step 4: Simplify right side
153,690.75x = 18,372,239,600.95 - Step 5: Solve for x
x = 18,372,239,600.95/153,690.75 - Step 6: Final answer
x = 119,540.31
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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.