Finding the Fourth Proportional to 111,731.68, 154,192.44 and 61,430.68
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Solution
The fourth proportional to 111,731.68, 154,192.44 and 61,430.68 is: 84,775.83
Step by Step Solution
- Step 1: Write the proportion equation
111,731.68 : 154,192.44 = 61,430.68 : x - Step 2: Convert to fraction form
111,731.68/154,192.44 = 61,430.68/x - Step 3: Cross multiply
111,731.68x = 154,192.44 × 61,430.68 - Step 4: Simplify right side
111,731.68x = 9,472,146,440.06 - Step 5: Solve for x
x = 9,472,146,440.06/111,731.68 - Step 6: Final answer
x = 84,775.83
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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.