Finding the Fourth Proportional to 112,487.19, 155,359.94 and 76,614.99
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Solution
The fourth proportional to 112,487.19, 155,359.94 and 76,614.99 is: 105,815.60
Step by Step Solution
- Step 1: Write the proportion equation
112,487.19 : 155,359.94 = 76,614.99 : x - Step 2: Convert to fraction form
112,487.19/155,359.94 = 76,614.99/x - Step 3: Cross multiply
112,487.19x = 155,359.94 × 76,614.99 - Step 4: Simplify right side
112,487.19x = 11,902,899,866.43 - Step 5: Solve for x
x = 11,902,899,866.43/112,487.19 - Step 6: Final answer
x = 105,815.60
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1.5x scale
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.