Finding the Fourth Proportional to 130,762.46, 180,385.26 and 85,466.99
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Solution
The fourth proportional to 130,762.46, 180,385.26 and 85,466.99 is: 117,900.70
Step by Step Solution
- Step 1: Write the proportion equation
130,762.46 : 180,385.26 = 85,466.99 : x - Step 2: Convert to fraction form
130,762.46/180,385.26 = 85,466.99/x - Step 3: Cross multiply
130,762.46x = 180,385.26 × 85,466.99 - Step 4: Simplify right side
130,762.46x = 15,416,985,212.57 - Step 5: Solve for x
x = 15,416,985,212.57/130,762.46 - Step 6: Final answer
x = 117,900.70
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1.5x scale
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.