Finding the Fourth Proportional to 135,325.20, 202,987.80 and 52,219.20
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Solution
The fourth proportional to 135,325.20, 202,987.80 and 52,219.20 is: 78,328.80
Step by Step Solution
- Step 1: Write the proportion equation
135,325.20 : 202,987.80 = 52,219.20 : x - Step 2: Convert to fraction form
135,325.20/202,987.80 = 52,219.20/x - Step 3: Cross multiply
135,325.20x = 202,987.80 × 52,219.20 - Step 4: Simplify right side
135,325.20x = 10,599,860,525.76 - Step 5: Solve for x
x = 10,599,860,525.76/135,325.20 - Step 6: Final answer
x = 78,328.80
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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.