Finding the Fourth Proportional to 100,336.08, 138,461.76 and 55,624.08
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Solution
The fourth proportional to 100,336.08, 138,461.76 and 55,624.08 is: 76,760.10
Step by Step Solution
- Step 1: Write the proportion equation
100,336.08 : 138,461.76 = 55,624.08 : x - Step 2: Convert to fraction form
100,336.08/138,461.76 = 55,624.08/x - Step 3: Cross multiply
100,336.08x = 138,461.76 × 55,624.08 - Step 4: Simplify right side
100,336.08x = 7,701,808,015.18 - Step 5: Solve for x
x = 7,701,808,015.18/100,336.08 - Step 6: Final answer
x = 76,760.10
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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.