Finding the Fourth Proportional to 154,326.35, 212,958.23 and 86,337.99
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Solution
The fourth proportional to 154,326.35, 212,958.23 and 86,337.99 is: 119,139.64
Step by Step Solution
- Step 1: Write the proportion equation
154,326.35 : 212,958.23 = 86,337.99 : x - Step 2: Convert to fraction form
154,326.35/212,958.23 = 86,337.99/x - Step 3: Cross multiply
154,326.35x = 212,958.23 × 86,337.99 - Step 4: Simplify right side
154,326.35x = 18,386,385,532.16 - Step 5: Solve for x
x = 18,386,385,532.16/154,326.35 - Step 6: Final answer
x = 119,139.64
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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.