Finding the Fourth Proportional to 111,699.68, 154,001.84 and 91,482.08
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Solution
The fourth proportional to 111,699.68, 154,001.84 and 91,482.08 is: 126,127.56
Step by Step Solution
- Step 1: Write the proportion equation
111,699.68 : 154,001.84 = 91,482.08 : x - Step 2: Convert to fraction form
111,699.68/154,001.84 = 91,482.08/x - Step 3: Cross multiply
111,699.68x = 154,001.84 × 91,482.08 - Step 4: Simplify right side
111,699.68x = 14,088,408,647.03 - Step 5: Solve for x
x = 14,088,408,647.03/111,699.68 - Step 6: Final answer
x = 126,127.56
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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.