Finding the Fourth Proportional to 140,125.23, 193,371.78 and 79,695.81
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Solution
The fourth proportional to 140,125.23, 193,371.78 and 79,695.81 is: 109,979.63
Step by Step Solution
- Step 1: Write the proportion equation
140,125.23 : 193,371.78 = 79,695.81 : x - Step 2: Convert to fraction form
140,125.23/193,371.78 = 79,695.81/x - Step 3: Cross multiply
140,125.23x = 193,371.78 × 79,695.81 - Step 4: Simplify right side
140,125.23x = 15,410,920,638.24 - Step 5: Solve for x
x = 15,410,920,638.24/140,125.23 - Step 6: Final answer
x = 109,979.63
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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.