Finding the Fourth Proportional to 90,243.36, 135,217.08 and 63,900.81
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Solution
The fourth proportional to 90,243.36, 135,217.08 and 63,900.81 is: 95,746.45
Step by Step Solution
- Step 1: Write the proportion equation
90,243.36 : 135,217.08 = 63,900.81 : x - Step 2: Convert to fraction form
90,243.36/135,217.08 = 63,900.81/x - Step 3: Cross multiply
90,243.36x = 135,217.08 × 63,900.81 - Step 4: Simplify right side
90,243.36x = 8,640,480,937.83 - Step 5: Solve for x
x = 8,640,480,937.83/90,243.36 - Step 6: Final answer
x = 95,746.45
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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.