Finding the Fourth Proportional to 154,599.36, 213,231.06 and 103,669.80
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Solution
The fourth proportional to 154,599.36, 213,231.06 and 103,669.80 is: 142,986.50
Step by Step Solution
- Step 1: Write the proportion equation
154,599.36 : 213,231.06 = 103,669.80 : x - Step 2: Convert to fraction form
154,599.36/213,231.06 = 103,669.80/x - Step 3: Cross multiply
154,599.36x = 213,231.06 × 103,669.80 - Step 4: Simplify right side
154,599.36x = 22,105,621,343.99 - Step 5: Solve for x
x = 22,105,621,343.99/154,599.36 - Step 6: Final answer
x = 142,986.50
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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.