Finding the Fourth Proportional to 153,838.56, 212,297.10 and 86,770.56
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Solution
The fourth proportional to 153,838.56, 212,297.10 and 86,770.56 is: 119,743.31
Step by Step Solution
- Step 1: Write the proportion equation
153,838.56 : 212,297.10 = 86,770.56 : x - Step 2: Convert to fraction form
153,838.56/212,297.10 = 86,770.56/x - Step 3: Cross multiply
153,838.56x = 212,297.10 × 86,770.56 - Step 4: Simplify right side
153,838.56x = 18,421,138,253.38 - Step 5: Solve for x
x = 18,421,138,253.38/153,838.56 - Step 6: Final answer
x = 119,743.31
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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.