Finding the Fourth Proportional to 117,919.08, 162,720.12 and 66,932.84
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Solution
The fourth proportional to 117,919.08, 162,720.12 and 66,932.84 is: 92,362.66
Step by Step Solution
- Step 1: Write the proportion equation
117,919.08 : 162,720.12 = 66,932.84 : x - Step 2: Convert to fraction form
117,919.08/162,720.12 = 66,932.84/x - Step 3: Cross multiply
117,919.08x = 162,720.12 × 66,932.84 - Step 4: Simplify right side
117,919.08x = 10,891,319,756.74 - Step 5: Solve for x
x = 10,891,319,756.74/117,919.08 - Step 6: Final answer
x = 92,362.66
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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.