Finding the Fourth Proportional to 158,642.63, 218,922.82 and 90,655.28
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Solution
The fourth proportional to 158,642.63, 218,922.82 and 90,655.28 is: 125,101.99
Step by Step Solution
- Step 1: Write the proportion equation
158,642.63 : 218,922.82 = 90,655.28 : x - Step 2: Convert to fraction form
158,642.63/218,922.82 = 90,655.28/x - Step 3: Cross multiply
158,642.63x = 218,922.82 × 90,655.28 - Step 4: Simplify right side
158,642.63x = 19,846,508,224.24 - Step 5: Solve for x
x = 19,846,508,224.24/158,642.63 - Step 6: Final answer
x = 125,101.99
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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.