Finding the Fourth Proportional to 198,471.79, 273,830.71 and 112,417.09
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Solution
The fourth proportional to 198,471.79, 273,830.71 and 112,417.09 is: 155,101.40
Step by Step Solution
- Step 1: Write the proportion equation
198,471.79 : 273,830.71 = 112,417.09 : x - Step 2: Convert to fraction form
198,471.79/273,830.71 = 112,417.09/x - Step 3: Cross multiply
198,471.79x = 273,830.71 × 112,417.09 - Step 4: Simplify right side
198,471.79x = 30,783,251,570.83 - Step 5: Solve for x
x = 30,783,251,570.83/198,471.79 - Step 6: Final answer
x = 155,101.40
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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.