Finding the Fourth Proportional to 112,121.08, 154,728.30 and 61,133.40
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Solution
The fourth proportional to 112,121.08, 154,728.30 and 61,133.40 is: 84,364.75
Step by Step Solution
- Step 1: Write the proportion equation
112,121.08 : 154,728.30 = 61,133.40 : x - Step 2: Convert to fraction form
112,121.08/154,728.30 = 61,133.40/x - Step 3: Cross multiply
112,121.08x = 154,728.30 × 61,133.40 - Step 4: Simplify right side
112,121.08x = 9,459,067,055.22 - Step 5: Solve for x
x = 9,459,067,055.22/112,121.08 - Step 6: Final answer
x = 84,364.75
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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.