Finding the Fourth Proportional to 112,219.08, 154,918.44 and 69,791.28
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Solution
The fourth proportional to 112,219.08, 154,918.44 and 69,791.28 is: 96,346.86
Step by Step Solution
- Step 1: Write the proportion equation
112,219.08 : 154,918.44 = 69,791.28 : x - Step 2: Convert to fraction form
112,219.08/154,918.44 = 69,791.28/x - Step 3: Cross multiply
112,219.08x = 154,918.44 × 69,791.28 - Step 4: Simplify right side
112,219.08x = 10,811,956,223.20 - Step 5: Solve for x
x = 10,811,956,223.20/112,219.08 - Step 6: Final answer
x = 96,346.86
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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.