Finding the Fourth Proportional to 100,313.21, 138,446.39 and 62,085.08
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Solution
The fourth proportional to 100,313.21, 138,446.39 and 62,085.08 is: 85,686.18
Step by Step Solution
- Step 1: Write the proportion equation
100,313.21 : 138,446.39 = 62,085.08 : x - Step 2: Convert to fraction form
100,313.21/138,446.39 = 62,085.08/x - Step 3: Cross multiply
100,313.21x = 138,446.39 × 62,085.08 - Step 4: Simplify right side
100,313.21x = 8,595,455,700.19 - Step 5: Solve for x
x = 8,595,455,700.19/100,313.21 - Step 6: Final answer
x = 85,686.18
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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.