Finding the Fourth Proportional to 153,763.62, 212,193.42 and 86,695.14
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Solution
The fourth proportional to 153,763.62, 212,193.42 and 86,695.14 is: 119,639.08
Step by Step Solution
- Step 1: Write the proportion equation
153,763.62 : 212,193.42 = 86,695.14 : x - Step 2: Convert to fraction form
153,763.62/212,193.42 = 86,695.14/x - Step 3: Cross multiply
153,763.62x = 212,193.42 × 86,695.14 - Step 4: Simplify right side
153,763.62x = 18,396,138,253.98 - Step 5: Solve for x
x = 18,396,138,253.98/153,763.62 - Step 6: Final answer
x = 119,639.08
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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.