Finding the Fourth Proportional to 154,477.79, 213,161.73 and 86,485.31
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Solution
The fourth proportional to 154,477.79, 213,161.73 and 86,485.31 is: 119,339.86
Step by Step Solution
- Step 1: Write the proportion equation
154,477.79 : 213,161.73 = 86,485.31 : x - Step 2: Convert to fraction form
154,477.79/213,161.73 = 86,485.31/x - Step 3: Cross multiply
154,477.79x = 213,161.73 × 86,485.31 - Step 4: Simplify right side
154,477.79x = 18,435,358,299.19 - Step 5: Solve for x
x = 18,435,358,299.19/154,477.79 - Step 6: Final answer
x = 119,339.86
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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.