Finding the Fourth Proportional to 100,653.19, 138,903.17 and 55,333.08
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Solution
The fourth proportional to 100,653.19, 138,903.17 and 55,333.08 is: 76,360.62
Step by Step Solution
- Step 1: Write the proportion equation
100,653.19 : 138,903.17 = 55,333.08 : x - Step 2: Convert to fraction form
100,653.19/138,903.17 = 55,333.08/x - Step 3: Cross multiply
100,653.19x = 138,903.17 × 55,333.08 - Step 4: Simplify right side
100,653.19x = 7,685,939,941.20 - Step 5: Solve for x
x = 7,685,939,941.20/100,653.19 - Step 6: Final answer
x = 76,360.62
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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.