Finding the Fourth Proportional to 143,765.24, 198,384.54 and 87,207.80
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Solution
The fourth proportional to 143,765.24, 198,384.54 and 87,207.80 is: 120,339.79
Step by Step Solution
- Step 1: Write the proportion equation
143,765.24 : 198,384.54 = 87,207.80 : x - Step 2: Convert to fraction form
143,765.24/198,384.54 = 87,207.80/x - Step 3: Cross multiply
143,765.24x = 198,384.54 × 87,207.80 - Step 4: Simplify right side
143,765.24x = 17,300,679,287.41 - Step 5: Solve for x
x = 17,300,679,287.41/143,765.24 - Step 6: Final answer
x = 120,339.79
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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.