Finding the Fourth Proportional to 112,912.07, 169,368.18 and 28,678.55
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Solution
The fourth proportional to 112,912.07, 169,368.18 and 28,678.55 is: 43,017.84
Step by Step Solution
- Step 1: Write the proportion equation
112,912.07 : 169,368.18 = 28,678.55 : x - Step 2: Convert to fraction form
112,912.07/169,368.18 = 28,678.55/x - Step 3: Cross multiply
112,912.07x = 169,368.18 × 28,678.55 - Step 4: Simplify right side
112,912.07x = 4,857,233,675.15 - Step 5: Solve for x
x = 4,857,233,675.15/112,912.07 - Step 6: Final answer
x = 43,017.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.