Finding the Fourth Proportional to 90,258.36, 135,239.58 and 63,915.80
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Solution
The fourth proportional to 90,258.36, 135,239.58 and 63,915.80 is: 95,768.92
Step by Step Solution
- Step 1: Write the proportion equation
90,258.36 : 135,239.58 = 63,915.80 : x - Step 2: Convert to fraction form
90,258.36/135,239.58 = 63,915.80/x - Step 3: Cross multiply
90,258.36x = 135,239.58 × 63,915.80 - Step 4: Simplify right side
90,258.36x = 8,643,945,947.36 - Step 5: Solve for x
x = 8,643,945,947.36/90,258.36 - Step 6: Final answer
x = 95,768.92
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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.