Finding the Fourth Proportional to 135,225.80, 202,915.64 and 68,669.72
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Solution
The fourth proportional to 135,225.80, 202,915.64 and 68,669.72 is: 103,043.65
Step by Step Solution
- Step 1: Write the proportion equation
135,225.80 : 202,915.64 = 68,669.72 : x - Step 2: Convert to fraction form
135,225.80/202,915.64 = 68,669.72/x - Step 3: Cross multiply
135,225.80x = 202,915.64 × 68,669.72 - Step 4: Simplify right side
135,225.80x = 13,934,160,182.42 - Step 5: Solve for x
x = 13,934,160,182.42/135,225.80 - Step 6: Final answer
x = 103,043.65
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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.