Finding the Fourth Proportional to 111,738.68, 154,202.10 and 61,437.68
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Solution
The fourth proportional to 111,738.68, 154,202.10 and 61,437.68 is: 84,785.49
Step by Step Solution
- Step 1: Write the proportion equation
111,738.68 : 154,202.10 = 61,437.68 : x - Step 2: Convert to fraction form
111,738.68/154,202.10 = 61,437.68/x - Step 3: Cross multiply
111,738.68x = 154,202.10 × 61,437.68 - Step 4: Simplify right side
111,738.68x = 9,473,819,275.13 - Step 5: Solve for x
x = 9,473,819,275.13/111,738.68 - Step 6: Final answer
x = 84,785.49
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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.