Finding the Fourth Proportional to 147,585.40, 221,378.10 and 121,319.80
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Solution
The fourth proportional to 147,585.40, 221,378.10 and 121,319.80 is: 181,979.70
Step by Step Solution
- Step 1: Write the proportion equation
147,585.40 : 221,378.10 = 121,319.80 : x - Step 2: Convert to fraction form
147,585.40/221,378.10 = 121,319.80/x - Step 3: Cross multiply
147,585.40x = 221,378.10 × 121,319.80 - Step 4: Simplify right side
147,585.40x = 26,857,546,816.38 - Step 5: Solve for x
x = 26,857,546,816.38/147,585.40 - Step 6: Final answer
x = 181,979.70
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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.