Finding the Fourth Proportional to 90,197.12, 135,296.58 and 40,279.74
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Solution
The fourth proportional to 90,197.12, 135,296.58 and 40,279.74 is: 60,420.02
Step by Step Solution
- Step 1: Write the proportion equation
90,197.12 : 135,296.58 = 40,279.74 : x - Step 2: Convert to fraction form
90,197.12/135,296.58 = 40,279.74/x - Step 3: Cross multiply
90,197.12x = 135,296.58 × 40,279.74 - Step 4: Simplify right side
90,197.12x = 5,449,711,065.29 - Step 5: Solve for x
x = 5,449,711,065.29/90,197.12 - Step 6: Final answer
x = 60,420.02
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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.