Finding the Fourth Proportional to 99,112.66, 136,888.99 and 65,272.42
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Solution
The fourth proportional to 99,112.66, 136,888.99 and 65,272.42 is: 90,150.70
Step by Step Solution
- Step 1: Write the proportion equation
99,112.66 : 136,888.99 = 65,272.42 : x - Step 2: Convert to fraction form
99,112.66/136,888.99 = 65,272.42/x - Step 3: Cross multiply
99,112.66x = 136,888.99 × 65,272.42 - Step 4: Simplify right side
99,112.66x = 8,935,075,648.66 - Step 5: Solve for x
x = 8,935,075,648.66/99,112.66 - Step 6: Final answer
x = 90,150.70
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1.5x scale
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.