Finding the Fourth Proportional to 153,286.83, 229,977.06 and 78,459.99
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Solution
The fourth proportional to 153,286.83, 229,977.06 and 78,459.99 is: 117,713.95
Step by Step Solution
- Step 1: Write the proportion equation
153,286.83 : 229,977.06 = 78,459.99 : x - Step 2: Convert to fraction form
153,286.83/229,977.06 = 78,459.99/x - Step 3: Cross multiply
153,286.83x = 229,977.06 × 78,459.99 - Step 4: Simplify right side
153,286.83x = 18,043,997,827.83 - Step 5: Solve for x
x = 18,043,997,827.83/153,286.83 - Step 6: Final answer
x = 117,713.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.