Finding the Fourth Proportional to 129,915.13, 179,283.41 and 70,299.13
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Solution
The fourth proportional to 129,915.13, 179,283.41 and 70,299.13 is: 97,013.09
Step by Step Solution
- Step 1: Write the proportion equation
129,915.13 : 179,283.41 = 70,299.13 : x - Step 2: Convert to fraction form
129,915.13/179,283.41 = 70,299.13/x - Step 3: Cross multiply
129,915.13x = 179,283.41 × 70,299.13 - Step 4: Simplify right side
129,915.13x = 12,603,467,746.43 - Step 5: Solve for x
x = 12,603,467,746.43/129,915.13 - Step 6: Final answer
x = 97,013.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.