Finding the Fourth Proportional to 98,161.90, 135,464.08 and 55,721.14
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Solution
The fourth proportional to 98,161.90, 135,464.08 and 55,721.14 is: 76,895.55
Step by Step Solution
- Step 1: Write the proportion equation
98,161.90 : 135,464.08 = 55,721.14 : x - Step 2: Convert to fraction form
98,161.90/135,464.08 = 55,721.14/x - Step 3: Cross multiply
98,161.90x = 135,464.08 × 55,721.14 - Step 4: Simplify right side
98,161.90x = 7,548,212,966.65 - Step 5: Solve for x
x = 7,548,212,966.65/98,161.90 - Step 6: Final answer
x = 76,895.55
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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.