Finding the Fourth Proportional to 99,126.18, 136,791.45 and 53,802.09
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Solution
The fourth proportional to 99,126.18, 136,791.45 and 53,802.09 is: 74,245.43
Step by Step Solution
- Step 1: Write the proportion equation
99,126.18 : 136,791.45 = 53,802.09 : x - Step 2: Convert to fraction form
99,126.18/136,791.45 = 53,802.09/x - Step 3: Cross multiply
99,126.18x = 136,791.45 × 53,802.09 - Step 4: Simplify right side
99,126.18x = 7,359,665,904.13 - Step 5: Solve for x
x = 7,359,665,904.13/99,126.18 - Step 6: Final answer
x = 74,245.43
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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.