Finding the Fourth Proportional to 143,129.95, 197,525.50 and 79,467.75
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Solution
The fourth proportional to 143,129.95, 197,525.50 and 79,467.75 is: 109,668.92
Step by Step Solution
- Step 1: Write the proportion equation
143,129.95 : 197,525.50 = 79,467.75 : x - Step 2: Convert to fraction form
143,129.95/197,525.50 = 79,467.75/x - Step 3: Cross multiply
143,129.95x = 197,525.50 × 79,467.75 - Step 4: Simplify right side
143,129.95x = 15,696,906,853.96 - Step 5: Solve for x
x = 15,696,906,853.96/143,129.95 - Step 6: Final answer
x = 109,668.92
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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.