Finding the Fourth Proportional to 97,415.20, 146,122.80 and 86,589.55
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Solution
The fourth proportional to 97,415.20, 146,122.80 and 86,589.55 is: 129,884.33
Step by Step Solution
- Step 1: Write the proportion equation
97,415.20 : 146,122.80 = 86,589.55 : x - Step 2: Convert to fraction form
97,415.20/146,122.80 = 86,589.55/x - Step 3: Cross multiply
97,415.20x = 146,122.80 × 86,589.55 - Step 4: Simplify right side
97,415.20x = 12,652,707,496.74 - Step 5: Solve for x
x = 12,652,707,496.74/97,415.20 - Step 6: Final answer
x = 129,884.33
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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.