Finding the Fourth Proportional to 198,651.11, 297,970.06 and 86,331.43
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Solution
The fourth proportional to 198,651.11, 297,970.06 and 86,331.43 is: 129,494.28
Step by Step Solution
- Step 1: Write the proportion equation
198,651.11 : 297,970.06 = 86,331.43 : x - Step 2: Convert to fraction form
198,651.11/297,970.06 = 86,331.43/x - Step 3: Cross multiply
198,651.11x = 297,970.06 × 86,331.43 - Step 4: Simplify right side
198,651.11x = 25,724,181,533.62 - Step 5: Solve for x
x = 25,724,181,533.62/198,651.11 - Step 6: Final answer
x = 129,494.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.