Finding the Fourth Proportional to 142,944.36, 197,258.19 and 79,288.08
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Solution
The fourth proportional to 142,944.36, 197,258.19 and 79,288.08 is: 109,414.76
Step by Step Solution
- Step 1: Write the proportion equation
142,944.36 : 197,258.19 = 79,288.08 : x - Step 2: Convert to fraction form
142,944.36/197,258.19 = 79,288.08/x - Step 3: Cross multiply
142,944.36x = 197,258.19 × 79,288.08 - Step 4: Simplify right side
142,944.36x = 15,640,223,149.38 - Step 5: Solve for x
x = 15,640,223,149.38/142,944.36 - Step 6: Final answer
x = 109,414.76
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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.