Finding the Fourth Proportional to 134,809.70, 202,214.55 and 90,457.70
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Solution
The fourth proportional to 134,809.70, 202,214.55 and 90,457.70 is: 135,686.55
Step by Step Solution
- Step 1: Write the proportion equation
134,809.70 : 202,214.55 = 90,457.70 : x - Step 2: Convert to fraction form
134,809.70/202,214.55 = 90,457.70/x - Step 3: Cross multiply
134,809.70x = 202,214.55 × 90,457.70 - Step 4: Simplify right side
134,809.70x = 18,291,863,099.54 - Step 5: Solve for x
x = 18,291,863,099.54/134,809.70 - Step 6: Final answer
x = 135,686.55
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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.