Finding the Fourth Proportional to 103,576.85, 142,855.08 and 67,289.99
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Solution
The fourth proportional to 103,576.85, 142,855.08 and 67,289.99 is: 92,807.58
Step by Step Solution
- Step 1: Write the proportion equation
103,576.85 : 142,855.08 = 67,289.99 : x - Step 2: Convert to fraction form
103,576.85/142,855.08 = 67,289.99/x - Step 3: Cross multiply
103,576.85x = 142,855.08 × 67,289.99 - Step 4: Simplify right side
103,576.85x = 9,612,717,261.79 - Step 5: Solve for x
x = 9,612,717,261.79/103,576.85 - Step 6: Final answer
x = 92,807.58
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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.