Finding the Fourth Proportional to 99,758.93, 149,445.43 and 83,556.09
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Solution
The fourth proportional to 99,758.93, 149,445.43 and 83,556.09 is: 125,172.52
Step by Step Solution
- Step 1: Write the proportion equation
99,758.93 : 149,445.43 = 83,556.09 : x - Step 2: Convert to fraction form
99,758.93/149,445.43 = 83,556.09/x - Step 3: Cross multiply
99,758.93x = 149,445.43 × 83,556.09 - Step 4: Simplify right side
99,758.93x = 12,487,075,590.28 - Step 5: Solve for x
x = 12,487,075,590.28/99,758.93 - Step 6: Final answer
x = 125,172.52
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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.