Finding the Fourth Proportional to 142,309.08, 196,455.12 and 91,397.78
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Solution
The fourth proportional to 142,309.08, 196,455.12 and 91,397.78 is: 126,172.99
Step by Step Solution
- Step 1: Write the proportion equation
142,309.08 : 196,455.12 = 91,397.78 : x - Step 2: Convert to fraction form
142,309.08/196,455.12 = 91,397.78/x - Step 3: Cross multiply
142,309.08x = 196,455.12 × 91,397.78 - Step 4: Simplify right side
142,309.08x = 17,955,561,837.63 - Step 5: Solve for x
x = 17,955,561,837.63/142,309.08 - Step 6: Final answer
x = 126,172.99
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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.