Finding the Fourth Proportional to 189,681.05, 261,756.77 and 103,638.19
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Solution
The fourth proportional to 189,681.05, 261,756.77 and 103,638.19 is: 143,019.02
Step by Step Solution
- Step 1: Write the proportion equation
189,681.05 : 261,756.77 = 103,638.19 : x - Step 2: Convert to fraction form
189,681.05/261,756.77 = 103,638.19/x - Step 3: Cross multiply
189,681.05x = 261,756.77 × 103,638.19 - Step 4: Simplify right side
189,681.05x = 27,127,997,863.05 - Step 5: Solve for x
x = 27,127,997,863.05/189,681.05 - Step 6: Final answer
x = 143,019.02
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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.