Finding the Fourth Proportional to 153,678.48, 212,070.72 and 89,148.99
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Solution
The fourth proportional to 153,678.48, 212,070.72 and 89,148.99 is: 123,022.37
Step by Step Solution
- Step 1: Write the proportion equation
153,678.48 : 212,070.72 = 89,148.99 : x - Step 2: Convert to fraction form
153,678.48/212,070.72 = 89,148.99/x - Step 3: Cross multiply
153,678.48x = 212,070.72 × 89,148.99 - Step 4: Simplify right side
153,678.48x = 18,905,890,496.57 - Step 5: Solve for x
x = 18,905,890,496.57/153,678.48 - Step 6: Final answer
x = 123,022.37
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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.