Finding the Fourth Proportional to 143,205.84, 197,623.98 and 79,549.56
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Solution
The fourth proportional to 143,205.84, 197,623.98 and 79,549.56 is: 109,778.35
Step by Step Solution
- Step 1: Write the proportion equation
143,205.84 : 197,623.98 = 79,549.56 : x - Step 2: Convert to fraction form
143,205.84/197,623.98 = 79,549.56/x - Step 3: Cross multiply
143,205.84x = 197,623.98 × 79,549.56 - Step 4: Simplify right side
143,205.84x = 15,720,900,654.45 - Step 5: Solve for x
x = 15,720,900,654.45/143,205.84 - Step 6: Final answer
x = 109,778.35
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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.