Finding the Fourth Proportional to 154,270.62, 212,830.65 and 100,536.06
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Solution
The fourth proportional to 154,270.62, 212,830.65 and 100,536.06 is: 138,698.83
Step by Step Solution
- Step 1: Write the proportion equation
154,270.62 : 212,830.65 = 100,536.06 : x - Step 2: Convert to fraction form
154,270.62/212,830.65 = 100,536.06/x - Step 3: Cross multiply
154,270.62x = 212,830.65 × 100,536.06 - Step 4: Simplify right side
154,270.62x = 21,397,154,998.24 - Step 5: Solve for x
x = 21,397,154,998.24/154,270.62 - Step 6: Final answer
x = 138,698.83
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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.