Finding the Fourth Proportional to 143,637.63, 215,647.19 and 122,712.09
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Solution
The fourth proportional to 143,637.63, 215,647.19 and 122,712.09 is: 184,231.09
Step by Step Solution
- Step 1: Write the proportion equation
143,637.63 : 215,647.19 = 122,712.09 : x - Step 2: Convert to fraction form
143,637.63/215,647.19 = 122,712.09/x - Step 3: Cross multiply
143,637.63x = 215,647.19 × 122,712.09 - Step 4: Simplify right side
143,637.63x = 26,462,517,387.53 - Step 5: Solve for x
x = 26,462,517,387.53/143,637.63 - Step 6: Final answer
x = 184,231.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.