Finding the Fourth Proportional to 153,354.40, 211,628.64 and 86,286.40
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Solution
The fourth proportional to 153,354.40, 211,628.64 and 86,286.40 is: 119,074.99
Step by Step Solution
- Step 1: Write the proportion equation
153,354.40 : 211,628.64 = 86,286.40 : x - Step 2: Convert to fraction form
153,354.40/211,628.64 = 86,286.40/x - Step 3: Cross multiply
153,354.40x = 211,628.64 × 86,286.40 - Step 4: Simplify right side
153,354.40x = 18,260,673,482.50 - Step 5: Solve for x
x = 18,260,673,482.50/153,354.40 - Step 6: Final answer
x = 119,074.99
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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.