Finding the Fourth Proportional to 163,081.20, 244,621.80 and 78,881.70
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Solution
The fourth proportional to 163,081.20, 244,621.80 and 78,881.70 is: 118,322.55
Step by Step Solution
- Step 1: Write the proportion equation
163,081.20 : 244,621.80 = 78,881.70 : x - Step 2: Convert to fraction form
163,081.20/244,621.80 = 78,881.70/x - Step 3: Cross multiply
163,081.20x = 244,621.80 × 78,881.70 - Step 4: Simplify right side
163,081.20x = 19,296,183,441.06 - Step 5: Solve for x
x = 19,296,183,441.06/163,081.20 - Step 6: Final answer
x = 118,322.55
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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.