Finding the Fourth Proportional to 138,745.70, 208,118.55 and 138,745.70
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Solution
The fourth proportional to 138,745.70, 208,118.55 and 138,745.70 is: 208,118.55
Step by Step Solution
- Step 1: Write the proportion equation
138,745.70 : 208,118.55 = 138,745.70 : x - Step 2: Convert to fraction form
138,745.70/208,118.55 = 138,745.70/x - Step 3: Cross multiply
138,745.70x = 208,118.55 × 138,745.70 - Step 4: Simplify right side
138,745.70x = 28,875,553,902.74 - Step 5: Solve for x
x = 28,875,553,902.74/138,745.70 - Step 6: Final answer
x = 208,118.55
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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.