Finding the Fourth Proportional to 140,688.19, 194,191.93 and 121,771.05
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Solution
The fourth proportional to 140,688.19, 194,191.93 and 121,771.05 is: 168,080.59
Step by Step Solution
- Step 1: Write the proportion equation
140,688.19 : 194,191.93 = 121,771.05 : x - Step 2: Convert to fraction form
140,688.19/194,191.93 = 121,771.05/x - Step 3: Cross multiply
140,688.19x = 194,191.93 × 121,771.05 - Step 4: Simplify right side
140,688.19x = 23,646,954,641.62 - Step 5: Solve for x
x = 23,646,954,641.62/140,688.19 - Step 6: Final answer
x = 168,080.59
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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.