Finding the Fourth Proportional to 128,767.08, 177,700.73 and 71,408.82
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Solution
The fourth proportional to 128,767.08, 177,700.73 and 71,408.82 is: 98,545.37
Step by Step Solution
- Step 1: Write the proportion equation
128,767.08 : 177,700.73 = 71,408.82 : x - Step 2: Convert to fraction form
128,767.08/177,700.73 = 71,408.82/x - Step 3: Cross multiply
128,767.08x = 177,700.73 × 71,408.82 - Step 4: Simplify right side
128,767.08x = 12,689,399,442.44 - Step 5: Solve for x
x = 12,689,399,442.44/128,767.08 - Step 6: Final answer
x = 98,545.37
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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.