Finding the Fourth Proportional to 105,838.85, 146,080.26 and 63,421.99
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Solution
The fourth proportional to 105,838.85, 146,080.26 and 63,421.99 is: 87,535.91
Step by Step Solution
- Step 1: Write the proportion equation
105,838.85 : 146,080.26 = 63,421.99 : x - Step 2: Convert to fraction form
105,838.85/146,080.26 = 63,421.99/x - Step 3: Cross multiply
105,838.85x = 146,080.26 × 63,421.99 - Step 4: Simplify right side
105,838.85x = 9,264,700,423.72 - Step 5: Solve for x
x = 9,264,700,423.72/105,838.85 - Step 6: Final answer
x = 87,535.91
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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.