Finding the Fourth Proportional to 111,703.86, 154,158.39 and 63,972.99
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Solution
The fourth proportional to 111,703.86, 154,158.39 and 63,972.99 is: 88,286.77
Step by Step Solution
- Step 1: Write the proportion equation
111,703.86 : 154,158.39 = 63,972.99 : x - Step 2: Convert to fraction form
111,703.86/154,158.39 = 63,972.99/x - Step 3: Cross multiply
111,703.86x = 154,158.39 × 63,972.99 - Step 4: Simplify right side
111,703.86x = 9,861,973,141.89 - Step 5: Solve for x
x = 9,861,973,141.89/111,703.86 - Step 6: Final answer
x = 88,286.77
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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.