Finding the Fourth Proportional to 90,195.60, 135,347.28 and 48,106.92
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Solution
The fourth proportional to 90,195.60, 135,347.28 and 48,106.92 is: 72,189.12
Step by Step Solution
- Step 1: Write the proportion equation
90,195.60 : 135,347.28 = 48,106.92 : x - Step 2: Convert to fraction form
90,195.60/135,347.28 = 48,106.92/x - Step 3: Cross multiply
90,195.60x = 135,347.28 × 48,106.92 - Step 4: Simplify right side
90,195.60x = 6,511,140,771.18 - Step 5: Solve for x
x = 6,511,140,771.18/90,195.60 - Step 6: Final answer
x = 72,189.12
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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.