Finding the Fourth Proportional to 146,979.36, 220,470.26 and 47,139.71
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Solution
The fourth proportional to 146,979.36, 220,470.26 and 47,139.71 is: 70,709.95
Step by Step Solution
- Step 1: Write the proportion equation
146,979.36 : 220,470.26 = 47,139.71 : x - Step 2: Convert to fraction form
146,979.36/220,470.26 = 47,139.71/x - Step 3: Cross multiply
146,979.36x = 220,470.26 × 47,139.71 - Step 4: Simplify right side
146,979.36x = 10,392,902,781.97 - Step 5: Solve for x
x = 10,392,902,781.97/146,979.36 - Step 6: Final answer
x = 70,709.95
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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.