Finding the Fourth Proportional to 192,913.80, 289,370.70 and 139,769.70
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Solution
The fourth proportional to 192,913.80, 289,370.70 and 139,769.70 is: 209,654.55
Step by Step Solution
- Step 1: Write the proportion equation
192,913.80 : 289,370.70 = 139,769.70 : x - Step 2: Convert to fraction form
192,913.80/289,370.70 = 139,769.70/x - Step 3: Cross multiply
192,913.80x = 289,370.70 × 139,769.70 - Step 4: Simplify right side
192,913.80x = 40,445,255,927.79 - Step 5: Solve for x
x = 40,445,255,927.79/192,913.80 - Step 6: Final answer
x = 209,654.55
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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.