Finding the Fourth Proportional to 140,107.68, 193,354.11 and 79,683.84
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Solution
The fourth proportional to 140,107.68, 193,354.11 and 79,683.84 is: 109,966.83
Step by Step Solution
- Step 1: Write the proportion equation
140,107.68 : 193,354.11 = 79,683.84 : x - Step 2: Convert to fraction form
140,107.68/193,354.11 = 79,683.84/x - Step 3: Cross multiply
140,107.68x = 193,354.11 × 79,683.84 - Step 4: Simplify right side
140,107.68x = 15,407,197,964.58 - Step 5: Solve for x
x = 15,407,197,964.58/140,107.68 - Step 6: Final answer
x = 109,966.83
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1.5x scale
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.