Finding the Fourth Proportional to 97,231.70, 145,847.55 and 81,679.70
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Solution
The fourth proportional to 97,231.70, 145,847.55 and 81,679.70 is: 122,519.55
Step by Step Solution
- Step 1: Write the proportion equation
97,231.70 : 145,847.55 = 81,679.70 : x - Step 2: Convert to fraction form
97,231.70/145,847.55 = 81,679.70/x - Step 3: Cross multiply
97,231.70x = 145,847.55 × 81,679.70 - Step 4: Simplify right side
97,231.70x = 11,912,784,129.74 - Step 5: Solve for x
x = 11,912,784,129.74/97,231.70 - Step 6: Final answer
x = 122,519.55
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1.5x scale
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.