Finding the Fourth Proportional to 101,190.68, 139,652.60 and 75,652.80
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Solution
The fourth proportional to 101,190.68, 139,652.60 and 75,652.80 is: 104,407.94
Step by Step Solution
- Step 1: Write the proportion equation
101,190.68 : 139,652.60 = 75,652.80 : x - Step 2: Convert to fraction form
101,190.68/139,652.60 = 75,652.80/x - Step 3: Cross multiply
101,190.68x = 139,652.60 × 75,652.80 - Step 4: Simplify right side
101,190.68x = 10,565,110,217.28 - Step 5: Solve for x
x = 10,565,110,217.28/101,190.68 - Step 6: Final answer
x = 104,407.94
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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.