Finding the Fourth Proportional to 97,076.49, 145,638.99 and 77,161.12
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Solution
The fourth proportional to 97,076.49, 145,638.99 and 77,161.12 is: 115,760.96
Step by Step Solution
- Step 1: Write the proportion equation
97,076.49 : 145,638.99 = 77,161.12 : x - Step 2: Convert to fraction form
97,076.49/145,638.99 = 77,161.12/x - Step 3: Cross multiply
97,076.49x = 145,638.99 × 77,161.12 - Step 4: Simplify right side
97,076.49x = 11,237,667,219.97 - Step 5: Solve for x
x = 11,237,667,219.97/97,076.49 - Step 6: Final answer
x = 115,760.96
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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.