Finding the Fourth Proportional to 154,912.99, 213,779.32 and 86,929.81
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Solution
The fourth proportional to 154,912.99, 213,779.32 and 86,929.81 is: 119,962.80
Step by Step Solution
- Step 1: Write the proportion equation
154,912.99 : 213,779.32 = 86,929.81 : x - Step 2: Convert to fraction form
154,912.99/213,779.32 = 86,929.81/x - Step 3: Cross multiply
154,912.99x = 213,779.32 × 86,929.81 - Step 4: Simplify right side
154,912.99x = 18,583,795,669.53 - Step 5: Solve for x
x = 18,583,795,669.53/154,912.99 - Step 6: Final answer
x = 119,962.80
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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.