Finding the Fourth Proportional to 138,958.24, 208,495.68 and 60,031.84
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Solution
The fourth proportional to 138,958.24, 208,495.68 and 60,031.84 is: 90,072.96
Step by Step Solution
- Step 1: Write the proportion equation
138,958.24 : 208,495.68 = 60,031.84 : x - Step 2: Convert to fraction form
138,958.24/208,495.68 = 60,031.84/x - Step 3: Cross multiply
138,958.24x = 208,495.68 × 60,031.84 - Step 4: Simplify right side
138,958.24x = 12,516,379,302.45 - Step 5: Solve for x
x = 12,516,379,302.45/138,958.24 - Step 6: Final answer
x = 90,072.96
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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.