Finding the Fourth Proportional to 134,811.70, 202,217.55 and 90,459.70
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Solution
The fourth proportional to 134,811.70, 202,217.55 and 90,459.70 is: 135,689.55
Step by Step Solution
- Step 1: Write the proportion equation
134,811.70 : 202,217.55 = 90,459.70 : x - Step 2: Convert to fraction form
134,811.70/202,217.55 = 90,459.70/x - Step 3: Cross multiply
134,811.70x = 202,217.55 × 90,459.70 - Step 4: Simplify right side
134,811.70x = 18,292,538,907.74 - Step 5: Solve for x
x = 18,292,538,907.74/134,811.70 - Step 6: Final answer
x = 135,689.55
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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.