Finding the Fourth Proportional to 142,936.23, 197,252.99 and 79,278.13
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Solution
The fourth proportional to 142,936.23, 197,252.99 and 79,278.13 is: 109,404.37
Step by Step Solution
- Step 1: Write the proportion equation
142,936.23 : 197,252.99 = 79,278.13 : x - Step 2: Convert to fraction form
142,936.23/197,252.99 = 79,278.13/x - Step 3: Cross multiply
142,936.23x = 197,252.99 × 79,278.13 - Step 4: Simplify right side
142,936.23x = 15,637,848,184.11 - Step 5: Solve for x
x = 15,637,848,184.11/142,936.23 - Step 6: Final answer
x = 109,404.37
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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.