Finding the Fourth Proportional to 135,154.12, 202,915.04 and 76,031.40
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Solution
The fourth proportional to 135,154.12, 202,915.04 and 76,031.40 is: 114,150.53
Step by Step Solution
- Step 1: Write the proportion equation
135,154.12 : 202,915.04 = 76,031.40 : x - Step 2: Convert to fraction form
135,154.12/202,915.04 = 76,031.40/x - Step 3: Cross multiply
135,154.12x = 202,915.04 × 76,031.40 - Step 4: Simplify right side
135,154.12x = 15,427,914,572.26 - Step 5: Solve for x
x = 15,427,914,572.26/135,154.12 - Step 6: Final answer
x = 114,150.53
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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.