Finding the Fourth Proportional to 157,913.09, 217,918.79 and 86,291.81
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Solution
The fourth proportional to 157,913.09, 217,918.79 and 86,291.81 is: 119,082.00
Step by Step Solution
- Step 1: Write the proportion equation
157,913.09 : 217,918.79 = 86,291.81 : x - Step 2: Convert to fraction form
157,913.09/217,918.79 = 86,291.81/x - Step 3: Cross multiply
157,913.09x = 217,918.79 × 86,291.81 - Step 4: Simplify right side
157,913.09x = 18,804,606,822.11 - Step 5: Solve for x
x = 18,804,606,822.11/157,913.09 - Step 6: Final answer
x = 119,082.00
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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.