Finding the Fourth Proportional to 131,320.11, 197,090.37 and 68,178.99
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Solution
The fourth proportional to 131,320.11, 197,090.37 and 68,178.99 is: 102,325.70
Step by Step Solution
- Step 1: Write the proportion equation
131,320.11 : 197,090.37 = 68,178.99 : x - Step 2: Convert to fraction form
131,320.11/197,090.37 = 68,178.99/x - Step 3: Cross multiply
131,320.11x = 197,090.37 × 68,178.99 - Step 4: Simplify right side
131,320.11x = 13,437,422,365.33 - Step 5: Solve for x
x = 13,437,422,365.33/131,320.11 - Step 6: Final answer
x = 102,325.70
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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.