Finding the Fourth Proportional to 113,633.48, 156,722.19 and 99,992.07
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Solution
The fourth proportional to 113,633.48, 156,722.19 and 99,992.07 is: 137,908.09
Step by Step Solution
- Step 1: Write the proportion equation
113,633.48 : 156,722.19 = 99,992.07 : x - Step 2: Convert to fraction form
113,633.48/156,722.19 = 99,992.07/x - Step 3: Cross multiply
113,633.48x = 156,722.19 × 99,992.07 - Step 4: Simplify right side
113,633.48x = 15,670,976,193.03 - Step 5: Solve for x
x = 15,670,976,193.03/113,633.48 - Step 6: Final answer
x = 137,908.09
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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.