Finding the Fourth Proportional to 100,230.79, 138,318.49 and 59,944.55
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Solution
The fourth proportional to 100,230.79, 138,318.49 and 59,944.55 is: 82,723.48
Step by Step Solution
- Step 1: Write the proportion equation
100,230.79 : 138,318.49 = 59,944.55 : x - Step 2: Convert to fraction form
100,230.79/138,318.49 = 59,944.55/x - Step 3: Cross multiply
100,230.79x = 138,318.49 × 59,944.55 - Step 4: Simplify right side
100,230.79x = 8,291,439,804.31 - Step 5: Solve for x
x = 8,291,439,804.31/100,230.79 - Step 6: Final answer
x = 82,723.48
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1.5x scale
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.