Finding the Fourth Proportional to 112,997.07, 155,886.75 and 69,965.19
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Solution
The fourth proportional to 112,997.07, 155,886.75 and 69,965.19 is: 96,521.49
Step by Step Solution
- Step 1: Write the proportion equation
112,997.07 : 155,886.75 = 69,965.19 : x - Step 2: Convert to fraction form
112,997.07/155,886.75 = 69,965.19/x - Step 3: Cross multiply
112,997.07x = 155,886.75 × 69,965.19 - Step 4: Simplify right side
112,997.07x = 10,906,646,082.23 - Step 5: Solve for x
x = 10,906,646,082.23/112,997.07 - Step 6: Final answer
x = 96,521.49
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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.