Finding the Fourth Proportional to 157,201.23, 216,900.81 and 89,202.81
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Solution
The fourth proportional to 157,201.23, 216,900.81 and 89,202.81 is: 123,078.95
Step by Step Solution
- Step 1: Write the proportion equation
157,201.23 : 216,900.81 = 89,202.81 : x - Step 2: Convert to fraction form
157,201.23/216,900.81 = 89,202.81/x - Step 3: Cross multiply
157,201.23x = 216,900.81 × 89,202.81 - Step 4: Simplify right side
157,201.23x = 19,348,161,743.28 - Step 5: Solve for x
x = 19,348,161,743.28/157,201.23 - Step 6: Final answer
x = 123,078.95
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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.